diff --git a/Src/Newtonsoft.Json.Tests/JsonValidatingReaderTests.cs b/Src/Newtonsoft.Json.Tests/JsonValidatingReaderTests.cs
index 26d7eff0..72556ad1 100644
--- a/Src/Newtonsoft.Json.Tests/JsonValidatingReaderTests.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonValidatingReaderTests.cs
@@ -976,7 +976,7 @@ namespace Newtonsoft.Json.Tests
     }
 
     [Test]
-    public void sdfsdf()
+    public void NoAdditionalProperties()
     {
       string schemaJson = @"{
   ""type"":""array"",
@@ -1013,6 +1013,69 @@ namespace Newtonsoft.Json.Tests
       Assert.IsFalse(reader.Read());
     }
 
+    [Test]
+    public void PatternPropertiesNoAdditionalProperties()
+    {
+      string schemaJson = @"{
+  ""type"":""object"",
+  ""patternProperties"": {
+     ""hi"": {""type"":""string""},
+     ""ho"": {""type"":""string""}
+  },
+  ""additionalProperties"": false
+}";
+
+      string json = @"{
+  ""hi"": ""A string!"",
+  ""hide"": ""A string!"",
+  ""ho"": 1,
+  ""hey"": ""A string!""
+}";
+
+      Json.Schema.ValidationEventArgs validationEventArgs = null;
+
+      JsonValidatingReader reader = new JsonValidatingReader(new JsonTextReader(new StringReader(json)));
+      reader.ValidationEventHandler += (sender, args) => { validationEventArgs = args; };
+      reader.Schema = JsonSchema.Parse(schemaJson);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.StartObject, reader.TokenType);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
+      Assert.AreEqual(null, validationEventArgs);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.String, reader.TokenType);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
+      Assert.AreEqual(null, validationEventArgs);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.String, reader.TokenType);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
+      Assert.AreEqual(null, validationEventArgs);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.Integer, reader.TokenType);
+      Assert.AreEqual("Invalid type. Expected String but got Integer. Line 4, position 10.", validationEventArgs.Message);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
+      Assert.AreEqual("Property 'hey' has not been defined and the schema does not allow additional properties. Line 5, position 8.", validationEventArgs.Message);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.String, reader.TokenType);
+
+      Assert.IsTrue(reader.Read());
+      Assert.AreEqual(JsonToken.EndObject, reader.TokenType);
+
+      Assert.IsFalse(reader.Read());
+    }
+
     [Test]
     public void ExtendedComplex()
     {
diff --git a/Src/Newtonsoft.Json.Tests/Schema/ExtensionsTests.cs b/Src/Newtonsoft.Json.Tests/Schema/ExtensionsTests.cs
index 31ed7d9a..2d02d979 100644
--- a/Src/Newtonsoft.Json.Tests/Schema/ExtensionsTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Schema/ExtensionsTests.cs
@@ -217,5 +217,64 @@ namespace Newtonsoft.Json.Tests.Schema
       Assert.AreEqual(1, errors.Count);
       Assert.AreEqual("Property 'g' has not been defined and the schema does not allow additional properties. Line 1, position 5.", errors[0]);
     }
+
+    [Test]
+    [ExpectedException(typeof(JsonSchemaException), ExpectedMessage = "Integer 10 equals maximum value of 10 and exclusive maximum is true.")]
+    public void ExclusiveMaximum_Int()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.Maximum = 10;
+      schema.ExclusiveMaximum = true;
+
+      JValue v = new JValue(10);
+      v.Validate(schema);
+    }
+
+    [Test]
+    [ExpectedException(typeof(JsonSchemaException), ExpectedMessage = "Float 10.1 equals maximum value of 10.1 and exclusive maximum is true.")]
+    public void ExclusiveMaximum_Float()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.Maximum = 10.1;
+      schema.ExclusiveMaximum = true;
+
+      JValue v = new JValue(10.1);
+      v.Validate(schema);
+    }
+
+    [Test]
+    [ExpectedException(typeof(JsonSchemaException), ExpectedMessage = "Integer 10 equals minimum value of 10 and exclusive minimum is true.")]
+    public void ExclusiveMinimum_Int()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.Minimum = 10;
+      schema.ExclusiveMinimum = true;
+
+      JValue v = new JValue(10);
+      v.Validate(schema);
+    }
+
+    [Test]
+    [ExpectedException(typeof(JsonSchemaException), ExpectedMessage = "Float 10.1 equals minimum value of 10.1 and exclusive minimum is true.")]
+    public void ExclusiveMinimum_Float()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.Minimum = 10.1;
+      schema.ExclusiveMinimum = true;
+
+      JValue v = new JValue(10.1);
+      v.Validate(schema);
+    }
+
+    [Test]
+    [ExpectedException(typeof(JsonSchemaException), ExpectedMessage = "Integer 10 is not evenly divisible by 3.")]
+    public void DivisibleBy_Int()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.DivisibleBy = 3;
+
+      JValue v = new JValue(10);
+      v.Validate(schema);
+    }
   }
 }
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaBuilderTests.cs b/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaBuilderTests.cs
index b3bba9b5..826f74f4 100644
--- a/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaBuilderTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaBuilderTests.cs
@@ -130,6 +130,21 @@ namespace Newtonsoft.Json.Tests.Schema
       Assert.AreEqual(true, schema.Required);
     }
 
+    [Test]
+    public void ExclusiveMinimum_ExclusiveMaximum()
+    {
+      string json = @"{
+  ""exclusiveMinimum"":true,
+  ""exclusiveMaximum"":true
+}";
+
+      JsonSchemaBuilder builder = new JsonSchemaBuilder(new JsonSchemaResolver());
+      JsonSchema schema = builder.Parse(new JsonTextReader(new StringReader(json)));
+
+      Assert.AreEqual(true, schema.ExclusiveMinimum);
+      Assert.AreEqual(true, schema.ExclusiveMaximum);
+    }
+
     [Test]
     public void ReadOnly()
     {
@@ -433,5 +448,22 @@ namespace Newtonsoft.Json.Tests.Schema
       JsonSchemaBuilder builder = new JsonSchemaBuilder(new JsonSchemaResolver());
       JsonSchema schema = builder.Parse(new JsonTextReader(new StringReader(json)));
     }
+
+    [Test]
+    public void PatternProperties()
+    {
+      string json = @"{
+  ""patternProperties"": {
+    ""[abc]"": { ""id"":""Blah"" }
+  }
+}";
+
+      JsonSchemaBuilder builder = new JsonSchemaBuilder(new JsonSchemaResolver());
+      JsonSchema schema = builder.Parse(new JsonTextReader(new StringReader(json)));
+
+      Assert.IsNotNull(schema.PatternProperties);
+      Assert.AreEqual(1, schema.PatternProperties.Count);
+      Assert.AreEqual("Blah", schema.PatternProperties["[abc]"].Id);
+    }
   }
 }
diff --git a/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaTests.cs b/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaTests.cs
index 7459ce08..0e31a1eb 100644
--- a/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Schema/JsonSchemaTests.cs
@@ -377,5 +377,50 @@ namespace Newtonsoft.Json.Tests.Schema
       Assert.AreEqual(schema.Properties["x"].Options[1], "Asc");
       Assert.AreEqual(schema.Properties["x"].Options[-1], "Desc");
     }
+
+    [Test]
+    public void WriteTo_ExclusiveMinimum_ExclusiveMaximum()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.ExclusiveMinimum = true;
+      schema.ExclusiveMaximum = true;
+
+      StringWriter writer = new StringWriter();
+      JsonTextWriter jsonWriter = new JsonTextWriter(writer);
+      jsonWriter.Formatting = Formatting.Indented;
+
+      schema.WriteTo(jsonWriter);
+
+      string json = writer.ToString();
+
+      Assert.AreEqual(@"{
+  ""exclusiveMinimum"": true,
+  ""exclusiveMaximum"": true
+}", json);
+    }
+
+    [Test]
+    public void WriteTo_PatternProperties()
+    {
+      JsonSchema schema = new JsonSchema();
+      schema.PatternProperties = new Dictionary<string, JsonSchema>
+        {
+          { "[abc]", new JsonSchema() }
+        };
+
+      StringWriter writer = new StringWriter();
+      JsonTextWriter jsonWriter = new JsonTextWriter(writer);
+      jsonWriter.Formatting = Formatting.Indented;
+
+      schema.WriteTo(jsonWriter);
+
+      string json = writer.ToString();
+
+      Assert.AreEqual(@"{
+  ""patternProperties"": {
+    ""[abc]"": {}
+  }
+}", json);
+    }
   }
 }
diff --git a/Src/Newtonsoft.Json/JsonValidatingReader.cs b/Src/Newtonsoft.Json/JsonValidatingReader.cs
index 6fc83cec..5bace6db 100644
--- a/Src/Newtonsoft.Json/JsonValidatingReader.cs
+++ b/Src/Newtonsoft.Json/JsonValidatingReader.cs
@@ -43,15 +43,15 @@ namespace Newtonsoft.Json
     private class SchemaScope
     {
       private readonly JTokenType _tokenType;
-      private readonly JsonSchemaModel _schema;
+      private readonly IList<JsonSchemaModel> _schemas;
       private readonly Dictionary<string, bool> _requiredProperties;
 
       public string CurrentPropertyName { get; set; }
       public int ArrayItemCount { get; set; }
 
-      public JsonSchemaModel Schema
+      public IList<JsonSchemaModel> Schemas
       {
-        get { return _schema; }
+        get { return _schemas; }
       }
 
       public Dictionary<string, bool> RequiredProperties
@@ -64,19 +64,19 @@ namespace Newtonsoft.Json
         get { return _tokenType; }
       }
 
-      public SchemaScope(JTokenType tokenType, JsonSchemaModel schema)
+      public SchemaScope(JTokenType tokenType, IList<JsonSchemaModel> schemas)
       {
         _tokenType = tokenType;
-        _schema = schema;
+        _schemas = schemas;
 
-        if (_schema != null && _schema.Properties != null)
-          _requiredProperties = GetRequiredProperties(_schema).Distinct().ToDictionary(p => p, p => false);
-        else
-          _requiredProperties = new Dictionary<string, bool>();
+        _requiredProperties = schemas.SelectMany(GetRequiredProperties).Distinct().ToDictionary(p => p, p => false);
       }
 
       private IEnumerable<string> GetRequiredProperties(JsonSchemaModel schema)
       {
+        if (schema == null || schema.Properties == null)
+          return Enumerable.Empty<string>();
+
         return schema.Properties.Where(p => p.Value.Required).Select(p => p.Key);
       }
     }
@@ -154,47 +154,79 @@ namespace Newtonsoft.Json
       return poppedScope;
     }
 
-    private JsonSchemaModel CurrentSchema
+    private IEnumerable<JsonSchemaModel> CurrentSchemas
     {
-      get { return _currentScope.Schema; }
+      get { return _currentScope.Schemas; }
     }
 
-    private JsonSchemaModel CurrentMemberSchema
+    private IEnumerable<JsonSchemaModel> CurrentMemberSchemas
     {
       get
       {
         if (_currentScope == null)
-          return _model;
+          return new List<JsonSchemaModel>(new [] { _model });
 
-        if (_currentScope.Schema == null)
-          return null;
+        if (_currentScope.Schemas == null || _currentScope.Schemas.Count == 0)
+          return Enumerable.Empty<JsonSchemaModel>();
 
         switch (_currentScope.TokenType)
         {
           case JTokenType.None:
-            return _currentScope.Schema;
+            return _currentScope.Schemas;
           case JTokenType.Object:
-            if (_currentScope.CurrentPropertyName == null)
-              throw new Exception("CurrentPropertyName has not been set on scope.");
-
-            JsonSchemaModel propertySchema;
-            if (CurrentSchema.Properties != null && CurrentSchema.Properties.TryGetValue(_currentScope.CurrentPropertyName, out propertySchema))
-              return propertySchema;
-
-            return (CurrentSchema.AllowAdditionalProperties) ? CurrentSchema.AdditionalProperties : null;
-          case JTokenType.Array:
-            if (!CollectionUtils.IsNullOrEmpty(CurrentSchema.Items))
             {
-              if (CurrentSchema.Items.Count == 1)
-                return CurrentSchema.Items[0];
+              if (_currentScope.CurrentPropertyName == null)
+                throw new Exception("CurrentPropertyName has not been set on scope.");
 
-              if (CurrentSchema.Items.Count > (_currentScope.ArrayItemCount - 1))
-                return CurrentSchema.Items[_currentScope.ArrayItemCount - 1];
+              IList<JsonSchemaModel> schemas = new List<JsonSchemaModel>();
+
+              foreach (JsonSchemaModel schema in CurrentSchemas)
+              {
+                JsonSchemaModel propertySchema;
+                if (schema.Properties != null && schema.Properties.TryGetValue(_currentScope.CurrentPropertyName, out propertySchema))
+                {
+                  schemas.Add(propertySchema);
+                }
+                if (schema.PatternProperties != null)
+                {
+                  foreach (KeyValuePair<string, JsonSchemaModel> patternProperty in schema.PatternProperties)
+                  {
+                    if (Regex.IsMatch(_currentScope.CurrentPropertyName, patternProperty.Key))
+                    {
+                      schemas.Add(patternProperty.Value);
+                    }
+                  }
+                }
+
+                if (schemas.Count == 0 && schema.AllowAdditionalProperties && schema.AdditionalProperties != null)
+                  schemas.Add(schema.AdditionalProperties);
+              }
+
+              return schemas;
             }
+          case JTokenType.Array:
+            {
+              IList<JsonSchemaModel> schemas = new List<JsonSchemaModel>();
+              
+              foreach (JsonSchemaModel schema in CurrentSchemas)
+              {
+                if (!CollectionUtils.IsNullOrEmpty(schema.Items))
+                {
+                  if (schema.Items.Count == 1)
+                    schemas.Add(schema.Items[0]);
 
-            return (CurrentSchema.AllowAdditionalProperties) ? CurrentSchema.AdditionalProperties : null;
+                  if (schema.Items.Count > (_currentScope.ArrayItemCount - 1))
+                    schemas.Add(schema.Items[_currentScope.ArrayItemCount - 1]);
+                }
+
+                if (schema.AllowAdditionalProperties && schema.AdditionalProperties != null)
+                  schemas.Add(schema.AdditionalProperties);
+              }
+
+              return schemas;
+            }
           case JTokenType.Constructor:
-            return null;
+            return Enumerable.Empty<JsonSchemaModel>();
           default:
             throw new ArgumentOutOfRangeException("TokenType", "Unexpected token type: {0}".FormatWith(CultureInfo.InvariantCulture, _currentScope.TokenType));
         }
@@ -371,58 +403,80 @@ namespace Newtonsoft.Json
         _model = builder.Build(_schema);
       }
 
+      //ValidateValueToken();
+
       switch (_reader.TokenType)
       {
         case JsonToken.StartObject:
           ProcessValue();
-          JsonSchemaModel objectSchema = (ValidateObject(CurrentMemberSchema))
-                                           ? CurrentMemberSchema 
-                                           : null;
-          Push(new SchemaScope(JTokenType.Object, objectSchema));
+          IList<JsonSchemaModel> objectSchemas = CurrentMemberSchemas.Where(ValidateObject).ToList();
+          Push(new SchemaScope(JTokenType.Object, objectSchemas));
           break;
         case JsonToken.StartArray:
           ProcessValue();
-          JsonSchemaModel arraySchema = (ValidateArray(CurrentMemberSchema))
-                                          ? CurrentMemberSchema
-                                          : null;
-          Push(new SchemaScope(JTokenType.Array, arraySchema));
+          IList<JsonSchemaModel> arraySchemas = CurrentMemberSchemas.Where(ValidateArray).ToList();
+          Push(new SchemaScope(JTokenType.Array, arraySchemas));
           break;
         case JsonToken.StartConstructor:
           Push(new SchemaScope(JTokenType.Constructor, null));
           break;
         case JsonToken.PropertyName:
-          ValidatePropertyName(CurrentSchema);
+          foreach (JsonSchemaModel schema in CurrentSchemas)
+          {
+            ValidatePropertyName(schema);
+          }
           break;
         case JsonToken.Raw:
           break;
         case JsonToken.Integer:
           ProcessValue();
-          ValidateInteger(CurrentMemberSchema);
+          foreach (JsonSchemaModel schema in CurrentMemberSchemas)
+          {
+            ValidateInteger(schema);
+          }
           break;
         case JsonToken.Float:
           ProcessValue();
-          ValidateFloat(CurrentMemberSchema);
+          foreach (JsonSchemaModel schema in CurrentMemberSchemas)
+          {
+            ValidateFloat(schema);
+          }
           break;
         case JsonToken.String:
           ProcessValue();
-          ValidateString(CurrentMemberSchema);
+          foreach (JsonSchemaModel schema in CurrentMemberSchemas)
+          {
+            ValidateString(schema);
+          }
           break;
         case JsonToken.Boolean:
           ProcessValue();
-          ValidateBoolean(CurrentMemberSchema);
+          foreach (JsonSchemaModel schema in CurrentMemberSchemas)
+          {
+            ValidateBoolean(schema);
+          }
           break;
         case JsonToken.Null:
           ProcessValue();
-          ValidateNull(CurrentMemberSchema);
+          foreach (JsonSchemaModel schema in CurrentMemberSchemas)
+          {
+            ValidateNull(schema);
+          }
           break;
         case JsonToken.Undefined:
           break;
         case JsonToken.EndObject:
-          ValidateEndObject(CurrentSchema);
+          foreach (JsonSchemaModel schema in CurrentSchemas)
+          {
+            ValidateEndObject(schema);
+          }
           Pop();
           break;
         case JsonToken.EndArray:
-          ValidateEndArray(CurrentSchema);
+          foreach (JsonSchemaModel schema in CurrentSchemas)
+          {
+            ValidateEndArray(schema);
+          }
           Pop();
           break;
         case JsonToken.EndConstructor:
@@ -528,11 +582,24 @@ namespace Newtonsoft.Json
       
       long value = Convert.ToInt64(_reader.Value, CultureInfo.InvariantCulture);
 
-      if (schema.Maximum != null && value > schema.Maximum)
-        RaiseError("Integer {0} exceeds maximum value of {1}.".FormatWith(CultureInfo.InvariantCulture, value, schema.Maximum), schema);
+      if (schema.Maximum != null)
+      {
+        if (value > schema.Maximum)
+          RaiseError("Integer {0} exceeds maximum value of {1}.".FormatWith(CultureInfo.InvariantCulture, value, schema.Maximum), schema);
+        if (schema.ExclusiveMaximum && value == schema.Maximum)
+          RaiseError("Integer {0} equals maximum value of {1} and exclusive maximum is true.".FormatWith(CultureInfo.InvariantCulture, value, schema.Maximum), schema);
+      }
 
-      if (schema.Minimum != null && value < schema.Minimum)
-        RaiseError("Integer {0} is less than minimum value of {1}.".FormatWith(CultureInfo.InvariantCulture, value, schema.Minimum), schema);
+      if (schema.Minimum != null)
+      {
+        if (value < schema.Minimum)
+          RaiseError("Integer {0} is less than minimum value of {1}.".FormatWith(CultureInfo.InvariantCulture, value, schema.Minimum), schema);
+        if (schema.ExclusiveMinimum && value == schema.Minimum)
+          RaiseError("Integer {0} equals minimum value of {1} and exclusive minimum is true.".FormatWith(CultureInfo.InvariantCulture, value, schema.Minimum), schema);
+      }
+
+      if (schema.DivisibleBy != null && !IsZero(value % schema.DivisibleBy.Value))
+        RaiseError("Integer {0} is not evenly divisible by {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.DivisibleBy), schema);
     }
 
     private void ProcessValue()
@@ -541,8 +608,11 @@ namespace Newtonsoft.Json
       {
         _currentScope.ArrayItemCount++;
 
-        if (CurrentSchema != null && CurrentSchema.Items != null && CurrentSchema.Items.Count > 1 && _currentScope.ArrayItemCount >= CurrentSchema.Items.Count)
-          RaiseError("Index {0} has not been defined and the schema does not allow additional items.".FormatWith(CultureInfo.InvariantCulture, _currentScope.ArrayItemCount), CurrentSchema);
+        foreach (JsonSchemaModel currentSchema in CurrentSchemas)
+        {
+          if (currentSchema != null && currentSchema.Items != null && currentSchema.Items.Count > 1 && _currentScope.ArrayItemCount >= currentSchema.Items.Count)
+            RaiseError("Index {0} has not been defined and the schema does not allow additional items.".FormatWith(CultureInfo.InvariantCulture, _currentScope.ArrayItemCount), currentSchema);
+        }
       }
     }
 
@@ -558,11 +628,21 @@ namespace Newtonsoft.Json
       
       double value = Convert.ToDouble(_reader.Value, CultureInfo.InvariantCulture);
 
-      if (schema.Maximum != null && value > schema.Maximum)
-        RaiseError("Float {0} exceeds maximum value of {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Maximum), schema);
+      if (schema.Maximum != null)
+      {
+        if (value > schema.Maximum)
+          RaiseError("Float {0} exceeds maximum value of {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Maximum), schema);
+        if (schema.ExclusiveMaximum && value == schema.Maximum)
+          RaiseError("Float {0} equals maximum value of {1} and exclusive maximum is true.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Maximum), schema);
+      }
 
-      if (schema.Minimum != null && value < schema.Minimum)
-        RaiseError("Float {0} is less than minimum value of {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Minimum), schema);
+      if (schema.Minimum != null)
+      {
+        if (value < schema.Minimum)
+          RaiseError("Float {0} is less than minimum value of {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Minimum), schema);
+        if (schema.ExclusiveMinimum && value == schema.Minimum)
+          RaiseError("Float {0} equals minimum value of {1} and exclusive minimum is true.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.Minimum), schema);
+      }
 
       if (schema.DivisibleBy != null && !IsZero(value % schema.DivisibleBy.Value))
         RaiseError("Float {0} is not evenly divisible by {1}.".FormatWith(CultureInfo.InvariantCulture, JsonConvert.ToString(value), schema.DivisibleBy), schema);
@@ -585,14 +665,34 @@ namespace Newtonsoft.Json
       if (_currentScope.RequiredProperties.ContainsKey(propertyName))
         _currentScope.RequiredProperties[propertyName] = true;
 
-      bool propertyDefinied = (schema.Properties != null && schema.Properties.ContainsKey(propertyName));
+      if (!schema.AllowAdditionalProperties)
+      {
+        bool propertyDefinied = IsPropertyDefinied(schema, propertyName);
 
-      if (!propertyDefinied && !schema.AllowAdditionalProperties)
-        RaiseError("Property '{0}' has not been defined and the schema does not allow additional properties.".FormatWith(CultureInfo.InvariantCulture, propertyName), schema);
+        if (!propertyDefinied)
+          RaiseError("Property '{0}' has not been defined and the schema does not allow additional properties.".FormatWith(CultureInfo.InvariantCulture, propertyName), schema);
+      }
 
       _currentScope.CurrentPropertyName = propertyName;
     }
 
+    private bool IsPropertyDefinied(JsonSchemaModel schema, string propertyName)
+    {
+      if (schema.Properties != null && schema.Properties.ContainsKey(propertyName))
+        return true;
+
+      if (schema.PatternProperties != null)
+      {
+        foreach (string pattern in schema.PatternProperties.Keys)
+        {
+          if (Regex.IsMatch(propertyName, pattern))
+            return true;
+        }
+      }
+
+      return false;
+    }
+
     private bool ValidateArray(JsonSchemaModel schema)
     {
       if (schema == null)
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchema.cs b/Src/Newtonsoft.Json/Schema/JsonSchema.cs
index c5c752f8..5eeb88b5 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchema.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchema.cs
@@ -89,9 +89,9 @@ namespace Newtonsoft.Json.Schema
     /// <value>The maximum length.</value>
     public int? MaximumLength { get; set; }
     /// <summary>
-    /// Gets or sets the maximum decimals.
+    /// Gets or sets a number that the value should be divisble by.
     /// </summary>
-    /// <value>The maximum decimals.</value>
+    /// <value>A number that the value should be divisble by.</value>
     public double? DivisibleBy { get; set; }
     /// <summary>
     /// Gets or sets the minimum.
@@ -104,6 +104,16 @@ namespace Newtonsoft.Json.Schema
     /// <value>The maximum.</value>
     public double? Maximum { get; set; }
     /// <summary>
+    /// Gets or sets a flag indicating whether the value can not equal the number defined by the "minimum" attribute.
+    /// </summary>
+    /// <value>A flag indicating whether the value can not equal the number defined by the "minimum" attribute.</value>
+    public bool? ExclusiveMinimum { get; set; }
+    /// <summary>
+    /// Gets or sets a flag indicating whether the value can not equal the number defined by the "maximum" attribute.
+    /// </summary>
+    /// <value>A flag indicating whether the value can not equal the number defined by the "maximum" attribute.</value>
+    public bool? ExclusiveMaximum { get; set; }
+    /// <summary>
     /// Gets or sets the minimum number of items.
     /// </summary>
     /// <value>The minimum number of items.</value>
@@ -129,6 +139,11 @@ namespace Newtonsoft.Json.Schema
     /// <value>The <see cref="JsonSchema"/> of additional properties.</value>
     public JsonSchema AdditionalProperties { get; set; }
     /// <summary>
+    /// Gets or sets the pattern properties.
+    /// </summary>
+    /// <value>The pattern properties.</value>
+    public IDictionary<string, JsonSchema> PatternProperties { get; set; }
+    /// <summary>
     /// Gets or sets a value indicating whether additional properties are allowed.
     /// </summary>
     /// <value>
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaBuilder.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaBuilder.cs
index e5e5ad41..830adbe8 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaBuilder.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaBuilder.cs
@@ -146,6 +146,9 @@ namespace Newtonsoft.Json.Schema
         case JsonSchemaConstants.AdditionalPropertiesPropertyName:
           ProcessAdditionalProperties();
           break;
+        case JsonSchemaConstants.PatternPropertiesPropertyName:
+          ProcessPatternProperties();
+          break;
         case JsonSchemaConstants.RequiredPropertyName:
           CurrentSchema.Required = (bool)_reader.Value;
           break;
@@ -161,6 +164,12 @@ namespace Newtonsoft.Json.Schema
         case JsonSchemaConstants.MaximumPropertyName:
           CurrentSchema.Maximum = Convert.ToDouble(_reader.Value, CultureInfo.InvariantCulture);
           break;
+        case JsonSchemaConstants.ExclusiveMinimumPropertyName:
+          CurrentSchema.ExclusiveMinimum = (bool)_reader.Value;
+          break;
+        case JsonSchemaConstants.ExclusiveMaximumPropertyName:
+          CurrentSchema.ExclusiveMaximum = (bool)_reader.Value;
+          break;
         case JsonSchemaConstants.MaximumLengthPropertyName:
           CurrentSchema.MaximumLength = Convert.ToInt32(_reader.Value, CultureInfo.InvariantCulture);
           break;
@@ -311,6 +320,27 @@ namespace Newtonsoft.Json.Schema
         CurrentSchema.AdditionalProperties = BuildSchema();
     }
 
+    private void ProcessPatternProperties()
+    {
+      Dictionary<string, JsonSchema> patternProperties = new Dictionary<string, JsonSchema>();
+
+      if (_reader.TokenType != JsonToken.StartObject)
+        throw new Exception("Expected start object token.");
+
+      while (_reader.Read() && _reader.TokenType != JsonToken.EndObject)
+      {
+        string propertyName = Convert.ToString(_reader.Value, CultureInfo.InvariantCulture);
+        _reader.Read();
+
+        if (patternProperties.ContainsKey(propertyName))
+          throw new Exception("Property {0} has already been defined in schema.".FormatWith(CultureInfo.InvariantCulture, propertyName));
+
+        patternProperties.Add(propertyName, BuildSchema());
+      }
+
+      CurrentSchema.PatternProperties = patternProperties;
+    }
+
     private void ProcessItems()
     {
       CurrentSchema.Items = new List<JsonSchema>();
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaConstants.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaConstants.cs
index 906b45fe..0e9eda1e 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaConstants.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaConstants.cs
@@ -36,11 +36,14 @@ namespace Newtonsoft.Json.Schema
     public const string PropertiesPropertyName = "properties";
     public const string ItemsPropertyName = "items";
     public const string RequiredPropertyName = "required";
+    public const string PatternPropertiesPropertyName = "patternProperties";
     public const string AdditionalPropertiesPropertyName = "additionalProperties";
     public const string RequiresPropertyName = "requires";
     public const string IdentityPropertyName = "identity";
     public const string MinimumPropertyName = "minimum";
     public const string MaximumPropertyName = "maximum";
+    public const string ExclusiveMinimumPropertyName = "exclusiveMinimum";
+    public const string ExclusiveMaximumPropertyName = "exclusiveMaximum";
     public const string MinimumItemsPropertyName = "minItems";
     public const string MaximumItemsPropertyName = "maxItems";
     public const string PatternPropertyName = "pattern";
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaModel.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaModel.cs
index c817669e..0d438b4b 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaModel.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaModel.cs
@@ -40,11 +40,14 @@ namespace Newtonsoft.Json.Schema
     public double? DivisibleBy { get; set; }
     public double? Minimum { get; set; }
     public double? Maximum { get; set; }
+    public bool ExclusiveMinimum { get; set; }
+    public bool ExclusiveMaximum { get; set; }
     public int? MinimumItems { get; set; }
     public int? MaximumItems { get; set; }
     public IList<string> Patterns { get; set; }
     public IList<JsonSchemaModel> Items { get; set; }
     public IDictionary<string, JsonSchemaModel> Properties { get; set; }
+    public IDictionary<string, JsonSchemaModel> PatternProperties { get; set; }
     public JsonSchemaModel AdditionalProperties { get; set; }
     public bool AllowAdditionalProperties { get; set; }
     public IList<JToken> Enum { get; set; }
@@ -83,6 +86,9 @@ namespace Newtonsoft.Json.Schema
 
       model.Minimum = MathUtils.Max(model.Minimum, schema.Minimum);
       model.Maximum = MathUtils.Max(model.Maximum, schema.Maximum);
+      model.ExclusiveMinimum = model.ExclusiveMinimum || (schema.ExclusiveMinimum ?? false);
+      model.ExclusiveMaximum = model.ExclusiveMaximum || (schema.ExclusiveMaximum ?? false);
+
       model.MinimumItems = MathUtils.Max(model.MinimumItems, schema.MinimumItems);
       model.MaximumItems = MathUtils.Min(model.MaximumItems, schema.MaximumItems);
       model.AllowAdditionalProperties = model.AllowAdditionalProperties && schema.AllowAdditionalProperties;
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaModelBuilder.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaModelBuilder.cs
index 5c7d3b29..ba3c7505 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaModelBuilder.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaModelBuilder.cs
@@ -71,13 +71,9 @@ namespace Newtonsoft.Json.Schema
 
       _nodes.Add(currentNode);
 
-      if (schema.Properties != null)
-      {
-        foreach (KeyValuePair<string, JsonSchema> property in schema.Properties)
-        {
-          AddProperty(currentNode, property.Key, property.Value);
-        }
-      }
+      AddProperties(schema.Properties, currentNode.Properties);
+
+      AddProperties(schema.PatternProperties, currentNode.PatternProperties);
 
       if (schema.Items != null)
       {
@@ -96,12 +92,23 @@ namespace Newtonsoft.Json.Schema
       return currentNode;
     }
 
-    public void AddProperty(JsonSchemaNode parentNode, string propertyName, JsonSchema schema)
+    public void AddProperties(IDictionary<string, JsonSchema> source, IDictionary<string, JsonSchemaNode> target)
+    {
+      if (source != null)
+      {
+        foreach (KeyValuePair<string, JsonSchema> property in source)
+        {
+          AddProperty(target, property.Key, property.Value);
+        }
+      }
+    }
+
+    public void AddProperty(IDictionary<string, JsonSchemaNode> target, string propertyName, JsonSchema schema)
     {
       JsonSchemaNode propertyNode;
-      parentNode.Properties.TryGetValue(propertyName, out propertyNode);
+      target.TryGetValue(propertyName, out propertyNode);
 
-      parentNode.Properties[propertyName] = AddSchema(propertyNode, schema);
+      target[propertyName] = AddSchema(propertyNode, schema);
     }
 
     public void AddItem(JsonSchemaNode parentNode, int index, JsonSchema schema)
@@ -143,6 +150,13 @@ namespace Newtonsoft.Json.Schema
 
         model.Properties[property.Key] = BuildNodeModel(property.Value);
       }
+      foreach (KeyValuePair<string, JsonSchemaNode> property in node.PatternProperties)
+      {
+        if (model.PatternProperties == null)
+          model.PatternProperties = new Dictionary<string, JsonSchemaModel>();
+
+        model.PatternProperties[property.Key] = BuildNodeModel(property.Value);
+      }
       for (int i = 0; i < node.Items.Count; i++)
       {
         if (model.Items == null)
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaNode.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaNode.cs
index 33f45588..5f1a23c9 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaNode.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaNode.cs
@@ -35,6 +35,7 @@ namespace Newtonsoft.Json.Schema
     public string Id { get; private set; }
     public ReadOnlyCollection<JsonSchema> Schemas { get; private set; }
     public Dictionary<string, JsonSchemaNode> Properties { get; private set; }
+    public Dictionary<string, JsonSchemaNode> PatternProperties { get; private set; }
     public List<JsonSchemaNode> Items { get; private set; }
     public JsonSchemaNode AdditionalProperties { get; set; }
 
@@ -42,6 +43,7 @@ namespace Newtonsoft.Json.Schema
     {
       Schemas = new ReadOnlyCollection<JsonSchema>(new []{ schema });
       Properties = new Dictionary<string, JsonSchemaNode>();
+      PatternProperties = new Dictionary<string, JsonSchemaNode>();
       Items = new List<JsonSchemaNode>();
 
       Id = GetId(Schemas);
@@ -51,6 +53,7 @@ namespace Newtonsoft.Json.Schema
     {
       Schemas = new ReadOnlyCollection<JsonSchema>(source.Schemas.Union(new[] { schema }).ToList());
       Properties = new Dictionary<string, JsonSchemaNode>(source.Properties);
+      PatternProperties = new Dictionary<string, JsonSchemaNode>(source.PatternProperties);
       Items = new List<JsonSchemaNode>(source.Items);
       AdditionalProperties = source.AdditionalProperties;
 
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaWriter.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaWriter.cs
index c561e5fb..eeaa0dbd 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaWriter.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaWriter.cs
@@ -89,20 +89,13 @@ namespace Newtonsoft.Json.Schema
           ReferenceOrWriteSchema(schema.AdditionalProperties);
         }
       }
-      if (schema.Properties != null)
-      {
-        _writer.WritePropertyName(JsonSchemaConstants.PropertiesPropertyName);
-        _writer.WriteStartObject();
-        foreach (KeyValuePair<string, JsonSchema> property in schema.Properties)
-        {
-          _writer.WritePropertyName(property.Key);
-          ReferenceOrWriteSchema(property.Value);
-        }
-        _writer.WriteEndObject();
-      }
+      WriteSchemaDictionaryIfNotNull(_writer, JsonSchemaConstants.PropertiesPropertyName, schema.Properties);
+      WriteSchemaDictionaryIfNotNull(_writer, JsonSchemaConstants.PatternPropertiesPropertyName, schema.PatternProperties);
       WriteItems(schema);
       WritePropertyIfNotNull(_writer, JsonSchemaConstants.MinimumPropertyName, schema.Minimum);
       WritePropertyIfNotNull(_writer, JsonSchemaConstants.MaximumPropertyName, schema.Maximum);
+      WritePropertyIfNotNull(_writer, JsonSchemaConstants.ExclusiveMinimumPropertyName, schema.ExclusiveMinimum);
+      WritePropertyIfNotNull(_writer, JsonSchemaConstants.ExclusiveMaximumPropertyName, schema.ExclusiveMaximum);
       WritePropertyIfNotNull(_writer, JsonSchemaConstants.MinimumLengthPropertyName, schema.MinimumLength);
       WritePropertyIfNotNull(_writer, JsonSchemaConstants.MaximumLengthPropertyName, schema.MaximumLength);
       WritePropertyIfNotNull(_writer, JsonSchemaConstants.MinimumItemsPropertyName, schema.MinimumItems);
@@ -153,6 +146,21 @@ namespace Newtonsoft.Json.Schema
       _writer.WriteEndObject();
     }
 
+    private void WriteSchemaDictionaryIfNotNull(JsonWriter writer, string propertyName, IDictionary<string, JsonSchema> properties)
+    {
+      if (properties != null)
+      {
+        writer.WritePropertyName(propertyName);
+        writer.WriteStartObject();
+        foreach (KeyValuePair<string, JsonSchema> property in properties)
+        {
+          writer.WritePropertyName(property.Key);
+          ReferenceOrWriteSchema(property.Value);
+        }
+        writer.WriteEndObject();
+      }
+    }
+
     private void WriteItems(JsonSchema schema)
     {
       if (CollectionUtils.IsNullOrEmpty(schema.Items))