diff --git a/extensions/Qdrant/Qdrant/Internals/Http/ScrollVectorsRequest.cs b/extensions/Qdrant/Qdrant/Internals/Http/ScrollVectorsRequest.cs
index 1ba5be2b6..13c57d22b 100644
--- a/extensions/Qdrant/Qdrant/Internals/Http/ScrollVectorsRequest.cs
+++ b/extensions/Qdrant/Qdrant/Internals/Http/ScrollVectorsRequest.cs
@@ -1,9 +1,12 @@
 // Copyright (c) Microsoft. All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net.Http;
 using System.Text.Json.Serialization;
+using Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
+using static Microsoft.KernelMemory.MemoryDb.Qdrant.Client.Http.Filter;
 
 namespace Microsoft.KernelMemory.MemoryDb.Qdrant.Client.Http;
 
@@ -38,42 +41,64 @@ public ScrollVectorsRequest HavingExternalId(string id)
         return this;
     }
 
-    public ScrollVectorsRequest HavingAllTags(IEnumerable<string>? tags)
+    public ScrollVectorsRequest HavingAllTags(IEnumerable<TagFilter>? tagFilters)
     {
-        if (tags == null) { return this; }
+        if (tagFilters == null) { return this; }
 
-        foreach (var tag in tags)
+        foreach (var tagFilter in tagFilters)
         {
-            if (!string.IsNullOrEmpty(tag))
+            if (!string.IsNullOrEmpty(tagFilter.Tag))
             {
-                this.Filters.AndValue(QdrantConstants.PayloadTagsField, tag);
+                if (tagFilter.FilterType == TagFilterType.NotEqual)
+                {
+                    this.Filters.And(new MustNotClause(QdrantConstants.PayloadTagsField, tagFilter.Tag));
+                }
+                else if (tagFilter.FilterType == TagFilterType.Equal)
+                {
+                    this.Filters.AndValue(QdrantConstants.PayloadTagsField, tagFilter.Tag);
+                }
+                else
+                {
+                    throw new NotSupportedException($"Filter type {tagFilter.FilterType} is not supported in QDrant Memory");
+                }
             }
         }
 
         return this;
     }
 
-    public ScrollVectorsRequest HavingSomeTags(IEnumerable<IEnumerable<string>?>? tagGroups)
+    public ScrollVectorsRequest HavingSomeTags(IEnumerable<IEnumerable<TagFilter>>? tagFiltersGroups)
     {
-        if (tagGroups == null) { return this; }
+        if (tagFiltersGroups == null) { return this; }
 
-        var list = tagGroups.ToList();
+        var list = tagFiltersGroups.ToList();
         if (list.Count < 2)
         {
             return this.HavingAllTags(list.FirstOrDefault());
         }
 
         var orFilter = new Filter.OrClause();
-        foreach (var tags in list)
+        foreach (var tagFilters in list)
         {
-            if (tags == null) { continue; }
+            if (tagFilters == null) { continue; }
 
             var andFilter = new Filter.AndClause();
-            foreach (var tag in tags)
+            foreach (var tagFilter in tagFilters)
             {
-                if (!string.IsNullOrEmpty(tag))
+                if (!string.IsNullOrEmpty(tagFilter.Tag))
                 {
-                    andFilter.AndValue(QdrantConstants.PayloadTagsField, tag);
+                    if (tagFilter.FilterType == TagFilterType.NotEqual)
+                    {
+                        andFilter.And(new MustNotClause(QdrantConstants.PayloadTagsField, tagFilter.Tag));
+                    }
+                    else if (tagFilter.FilterType == TagFilterType.Equal)
+                    {
+                        andFilter.AndValue(QdrantConstants.PayloadTagsField, tagFilter.Tag);
+                    }
+                    else
+                    {
+                        throw new NotSupportedException($"Filter type {tagFilter.FilterType} is not supported in QDrant Memory");
+                    }
                 }
             }
 
diff --git a/extensions/Qdrant/Qdrant/Internals/Http/SearchVectorsRequest.cs b/extensions/Qdrant/Qdrant/Internals/Http/SearchVectorsRequest.cs
index 188ae3db8..3a2941be3 100644
--- a/extensions/Qdrant/Qdrant/Internals/Http/SearchVectorsRequest.cs
+++ b/extensions/Qdrant/Qdrant/Internals/Http/SearchVectorsRequest.cs
@@ -1,9 +1,11 @@
 // Copyright (c) Microsoft. All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net.Http;
 using System.Text.Json.Serialization;
+using Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
 using static Microsoft.KernelMemory.MemoryDb.Qdrant.Client.Http.Filter;
 
 namespace Microsoft.KernelMemory.MemoryDb.Qdrant.Client.Http;
@@ -57,46 +59,61 @@ public SearchVectorsRequest HavingExternalId(string externalId)
         return this;
     }
 
-    public SearchVectorsRequest HavingAllTags(IEnumerable<string>? tags)
+    public SearchVectorsRequest HavingAllTags(IEnumerable<TagFilter>? tagFilters)
     {
-        if (tags == null) { return this; }
+        if (tagFilters == null) { return this; }
 
-        foreach (var tag in tags)
+        foreach (var tagFilter in tagFilters)
         {
-            if (!string.IsNullOrEmpty(tag))
+            if (!string.IsNullOrEmpty(tagFilter.Tag))
             {
-                this.Filters.AndValue(QdrantConstants.PayloadTagsField, tag);
+                if (tagFilter.FilterType == TagFilterType.NotEqual)
+                {
+                    this.Filters.And(new MustNotClause(QdrantConstants.PayloadTagsField, tagFilter.Tag));
+                }
+                else if (tagFilter.FilterType == TagFilterType.Equal)
+                {
+                    this.Filters.AndValue(QdrantConstants.PayloadTagsField, tagFilter.Tag);
+                }
+                else
+                {
+                    throw new NotSupportedException($"Filter type {tagFilter.FilterType} is not supported in QDrant Memory");
+                }
             }
         }
 
         return this;
     }
 
-    public SearchVectorsRequest HavingSomeTags(IEnumerable<IEnumerable<string>?>? tagGroups)
+    public SearchVectorsRequest HavingSomeTags(List<IEnumerable<TagFilter>>? tagFiltersGroup)
     {
-        if (tagGroups == null) { return this; }
+        if (tagFiltersGroup == null) { return this; }
 
-        var list = tagGroups.ToList();
+        var list = tagFiltersGroup.ToList();
         if (list.Count < 2)
         {
             return this.HavingAllTags(list.FirstOrDefault());
         }
 
         var orFilter = new Filter.OrClause();
-        foreach (var tags in list)
+        foreach (var tagFilters in list)
         {
-            if (tags == null) { continue; }
+            if (tagFilters == null) { continue; }
 
             var andFilter = new Filter.AndClause();
-            foreach (var tag in tags.Where(t => !string.IsNullOrEmpty(t)))
+            foreach (var tagFilter in tagFilters.Where(t => !string.IsNullOrEmpty(t.Tag)))
             {
-                if (tag[0] == '!')
+                if (tagFilter.FilterType == TagFilterType.NotEqual)
+                {
+                    andFilter.And(new MustNotClause(QdrantConstants.PayloadTagsField, tagFilter.Tag));
+                }
+                else if (tagFilter.FilterType == TagFilterType.Equal)
                 {
-                    andFilter.And(new MustNotClause(QdrantConstants.PayloadTagsField, tag[1..]));
+                    andFilter.AndValue(QdrantConstants.PayloadTagsField, tagFilter.Tag);
                 }
                 else
                 {
-                    andFilter.AndValue(QdrantConstants.PayloadTagsField, tag);
+                    throw new NotSupportedException($"Filter type {tagFilter.FilterType} is not supported in QDrant Memory");
                 }
             }
 
diff --git a/extensions/Qdrant/Qdrant/Internals/QdrantClient.cs b/extensions/Qdrant/Qdrant/Internals/QdrantClient.cs
index 8abf979ad..d797bb590 100644
--- a/extensions/Qdrant/Qdrant/Internals/QdrantClient.cs
+++ b/extensions/Qdrant/Qdrant/Internals/QdrantClient.cs
@@ -12,6 +12,7 @@
 using Microsoft.Extensions.Logging;
 using Microsoft.KernelMemory.Diagnostics;
 using Microsoft.KernelMemory.MemoryDb.Qdrant.Client.Http;
+using Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
 using Microsoft.KernelMemory.MemoryStorage;
 
 namespace Microsoft.KernelMemory.MemoryDb.Qdrant.Client;
@@ -279,7 +280,7 @@ public async Task DeleteVectorsAsync(string collectionName, IList<Guid> vectorId
     /// <returns>List of vectors</returns>
     public async Task<List<QdrantPoint<T>>> GetListAsync(
         string collectionName,
-        IEnumerable<IEnumerable<string>?>? requiredTags = null,
+        List<IEnumerable<TagFilter>>? requiredTags = null,
         int offset = 0,
         int limit = 1,
         bool withVectors = false,
@@ -339,7 +340,7 @@ public async Task<List<QdrantPoint<T>>> GetListAsync(
         double scoreThreshold,
         int limit = 1,
         bool withVectors = false,
-        IEnumerable<IEnumerable<string>?>? requiredTags = null,
+        List<IEnumerable<TagFilter>>? requiredTags = null,
         CancellationToken cancellationToken = default)
     {
         this._log.LogTrace("Searching top {0} nearest vectors", limit);
diff --git a/extensions/Qdrant/Qdrant/Internals/TagFilter.cs b/extensions/Qdrant/Qdrant/Internals/TagFilter.cs
new file mode 100644
index 000000000..8fe604f1b
--- /dev/null
+++ b/extensions/Qdrant/Qdrant/Internals/TagFilter.cs
@@ -0,0 +1,5 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
+
+internal record TagFilter(string Tag, TagFilterType FilterType);
diff --git a/extensions/Qdrant/Qdrant/Internals/TagFilterType.cs b/extensions/Qdrant/Qdrant/Internals/TagFilterType.cs
new file mode 100644
index 000000000..3150b36de
--- /dev/null
+++ b/extensions/Qdrant/Qdrant/Internals/TagFilterType.cs
@@ -0,0 +1,10 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
+
+internal enum TagFilterType
+{
+    Unknown = 0,
+    Equal = 1,
+    NotEqual = 2,
+}
diff --git a/extensions/Qdrant/Qdrant/QdrantMemory.cs b/extensions/Qdrant/Qdrant/QdrantMemory.cs
index dc1bc8666..e0540df52 100644
--- a/extensions/Qdrant/Qdrant/QdrantMemory.cs
+++ b/extensions/Qdrant/Qdrant/QdrantMemory.cs
@@ -12,6 +12,7 @@
 using Microsoft.KernelMemory.AI;
 using Microsoft.KernelMemory.Diagnostics;
 using Microsoft.KernelMemory.MemoryDb.Qdrant.Client;
+using Microsoft.KernelMemory.MemoryDb.Qdrant.Internals;
 using Microsoft.KernelMemory.MemoryStorage;
 
 namespace Microsoft.KernelMemory.MemoryDb.Qdrant;
@@ -160,7 +161,7 @@ public async IAsyncEnumerable<string> UpsertBatchAsync(string index, IEnumerable
         index = NormalizeIndexName(index);
         if (limit <= 0) { limit = int.MaxValue; }
 
-        List<IEnumerable<string>> requiredTags = CreateRequiredTagsFromMemoryFilters(filters);
+        var requiredTags = CreateRequiredTagsFromMemoryFilters(filters);
 
         Embedding textEmbedding = await this._embeddingGenerator.GenerateEmbeddingAsync(text, cancellationToken).ConfigureAwait(false);
 
@@ -200,7 +201,7 @@ public async IAsyncEnumerable<MemoryRecord> GetListAsync(
         index = NormalizeIndexName(index);
         if (limit <= 0) { limit = int.MaxValue; }
 
-        List<IEnumerable<string>> requiredTags = CreateRequiredTagsFromMemoryFilters(filters);
+        var requiredTags = CreateRequiredTagsFromMemoryFilters(filters);
 
         List<QdrantPoint<DefaultQdrantPayload>> results;
         try
@@ -268,9 +269,9 @@ private static string NormalizeIndexName(string index)
         return index.Trim();
     }
 
-    private static List<IEnumerable<string>> CreateRequiredTagsFromMemoryFilters(ICollection<MemoryFilter>? filters)
+    private static List<IEnumerable<TagFilter>> CreateRequiredTagsFromMemoryFilters(ICollection<MemoryFilter>? filters)
     {
-        var requiredTags = new List<IEnumerable<string>>();
+        var requiredTags = new List<IEnumerable<TagFilter>>();
         // Check if we have at least one non-empty filter
         var nonEmptyFilters = filters?.Where(filters => !filters.IsEmpty()).ToArray() ?? Array.Empty<MemoryFilter>();
         if (nonEmptyFilters.Length > 0)
@@ -278,16 +279,16 @@ private static List<IEnumerable<string>> CreateRequiredTagsFromMemoryFilters(ICo
             foreach (var memoryFilter in nonEmptyFilters)
             {
                 var filtersList = memoryFilter.GetFilters();
-                List<string> stringFilters = new();
+                List<TagFilter> stringFilters = new();
                 foreach (var baseFilter in filtersList)
                 {
                     if (baseFilter is EqualFilter eq)
                     {
-                        stringFilters.Add($"{eq.Key}{Constants.ReservedEqualsChar}{eq.Value}");
+                        stringFilters.Add(new TagFilter($"{eq.Key}{Constants.ReservedEqualsChar}{eq.Value}", TagFilterType.Equal));
                     }
                     else if (baseFilter is NotEqualFilter neq)
                     {
-                        stringFilters.Add($"!{neq.Key}{Constants.ReservedEqualsChar}{neq.Value}");
+                        stringFilters.Add(new TagFilter($"{neq.Key}{Constants.ReservedEqualsChar}{neq.Value}", TagFilterType.NotEqual));
                     }
                     else
                     {