diff --git a/components/brave_ads/core/internal/serving/targeting/condition_matcher/condition_matcher_util_unittest.cc b/components/brave_ads/core/internal/serving/targeting/condition_matcher/condition_matcher_util_unittest.cc
index 611a665ff643..febe0880016d 100644
--- a/components/brave_ads/core/internal/serving/targeting/condition_matcher/condition_matcher_util_unittest.cc
+++ b/components/brave_ads/core/internal/serving/targeting/condition_matcher/condition_matcher_util_unittest.cc
@@ -46,7 +46,8 @@ TEST_F(BraveAdsConditionMatcherUtilTest,
 
 TEST_F(BraveAdsConditionMatcherUtilTest, MatchEpochEqualOperatorCondition) {
   // Arrange
-  const ConditionMatcherMap condition_matchers = {{prefs::kServeAdAt, "[=]:7"}};
+  const ConditionMatcherMap condition_matchers = {
+      {prefs::kServeAdAt, "[T=]:7"}};
 
   AdvanceClockBy(base::Days(7));
 
@@ -57,7 +58,8 @@ TEST_F(BraveAdsConditionMatcherUtilTest, MatchEpochEqualOperatorCondition) {
 TEST_F(BraveAdsConditionMatcherUtilTest,
        DoNotMatchEpochEqualOperatorCondition) {
   // Arrange
-  const ConditionMatcherMap condition_matchers = {{prefs::kServeAdAt, "[=]:7"}};
+  const ConditionMatcherMap condition_matchers = {
+      {prefs::kServeAdAt, "[T=]:7"}};
 
   AdvanceClockBy(base::Days(7) - base::Milliseconds(1));
 
@@ -149,7 +151,7 @@ TEST_F(BraveAdsConditionMatcherUtilTest,
   // Arrange
   const ConditionMatcherMap condition_matchers = {
       {prefs::kOptedInToNotificationAds, "0"},  // Value is "1" in the pref.
-      {prefs::kServeAdAt, "[>]:7"}};            // 5 days ago in the pref.
+      {prefs::kServeAdAt, "[T>]:7"}};           // 5 days ago in the pref.
 
   AdvanceClockBy(base::Days(5));
 
diff --git a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util.cc b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util.cc
index 70182f66e87f..a2c00bb25a32 100644
--- a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util.cc
+++ b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util.cc
@@ -17,11 +17,11 @@ namespace brave_ads {
 
 namespace {
 
-constexpr char kEqualOperatorConditionMatcherPrefix[] = "[=]:";
-constexpr char kGreaterThanOperatorConditionMatcherPrefix[] = "[>]:";
-constexpr char kGreaterThanOrEqualOperatorConditionMatcherPrefix[] = "[≥]:";
-constexpr char kLessThanOperatorConditionMatcherPrefix[] = "[<]:";
-constexpr char kLessThanOrEqualOperatorConditionMatcherPrefix[] = "[≤]:";
+constexpr char kEqualOperatorConditionMatcherPrefix[] = "[T=]:";
+constexpr char kGreaterThanOperatorConditionMatcherPrefix[] = "[T>]:";
+constexpr char kGreaterThanOrEqualOperatorConditionMatcherPrefix[] = "[T≥]:";
+constexpr char kLessThanOperatorConditionMatcherPrefix[] = "[T<]:";
+constexpr char kLessThanOrEqualOperatorConditionMatcherPrefix[] = "[T≤]:";
 
 }  // namespace
 
diff --git a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util_unittest.cc b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util_unittest.cc
index 7016fb02d842..f786cc1afc76 100644
--- a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util_unittest.cc
+++ b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/epoch_operator_condition_matcher_util_unittest.cc
@@ -24,7 +24,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
        DoNotMatchMalformedOperator) {
   // Act & Assert
   EXPECT_FALSE(MatchEpochOperator(
-      "13372214400000000" /*1st October 2024 00:00:00 UTC*/, "[=]: 7 "));
+      "13372214400000000" /*1st October 2024 00:00:00 UTC*/, "[T=]: 7 "));
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, MatchEqualOperator) {
@@ -34,7 +34,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, MatchEqualOperator) {
   // Act & Assert
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[=]:2"));  // Event occurred 2 days ago.
+                         "[T=]:2"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, DoNotMatchEqualOperator) {
@@ -44,7 +44,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, DoNotMatchEqualOperator) {
   // Act & Assert
   EXPECT_FALSE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[=]:3"));  // Event occurred 2 days ago.
+                         "[T=]:3"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -55,7 +55,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[>]:1"));  // Event occurred 2 days ago.
+                         "[T>]:1"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -66,7 +66,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_FALSE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[>]:2"));  // Event occurred 2 days ago.
+                         "[T>]:2"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -77,10 +77,10 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≥]:1"));  // Event occurred 2 days ago.
+                         "[T≥]:1"));  // Event occurred 2 days ago.
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≥]:2"));  // Event occurred 2 days ago.
+                         "[T≥]:2"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -91,7 +91,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_FALSE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≥]:3"));  // Event occurred 2 days ago.
+                         "[T≥]:3"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, MatchLessThanOperator) {
@@ -101,7 +101,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest, MatchLessThanOperator) {
   // Act & Assert
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[<]:3"));  // Event occurred 2 days ago.
+                         "[T<]:3"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -112,7 +112,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_FALSE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[<]:2"));  // Event occurred 2 days ago.
+                         "[T<]:2"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -123,10 +123,10 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≤]:3"));  // Event occurred 2 days ago.
+                         "[T≤]:3"));  // Event occurred 2 days ago.
   EXPECT_TRUE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≤]:2"));  // Event occurred 2 days ago.
+                         "[T≤]:2"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -137,7 +137,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
   // Act & Assert
   EXPECT_FALSE(
       MatchEpochOperator("13372214400000000" /*1st October 2024 00:00:00 UTC*/,
-                         "[≤]:1"));  // Event occurred 2 days ago.
+                         "[T≤]:1"));  // Event occurred 2 days ago.
 }
 
 TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
@@ -147,7 +147,7 @@ TEST_F(BraveAdsEpochOperatorConditionMatcherUtilTest,
 
   // Act & Assert
   EXPECT_FALSE(MatchEpochOperator(
-      "13372214400000000" /*1st October 2024 00:00:00 UTC*/, "[_]:2"));
+      "13372214400000000" /*1st October 2024 00:00:00 UTC*/, "[T_]:2"));
 }
 
 }  // namespace brave_ads
diff --git a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal.h b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal.h
index 8128d00c2f44..e00ba69d37c0 100644
--- a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal.h
+++ b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal.h
@@ -16,7 +16,7 @@ class TimeDelta;
 
 namespace brave_ads {
 
-inline constexpr char kEpochOperatorConditionMatcherPrefixPattern[] = "[?]:*";
+inline constexpr char kEpochOperatorConditionMatcherPrefixPattern[] = "[T?]:*";
 
 // Parses a number of days from a condition.
 std::optional<int> ParseDays(std::string_view condition);
diff --git a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal_unittest.cc b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal_unittest.cc
index b2bf6d04b2cc..02ddb946ef81 100644
--- a/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal_unittest.cc
+++ b/components/brave_ads/core/internal/serving/targeting/condition_matcher/matchers/internal/epoch_operator_condition_matcher_util_internal_unittest.cc
@@ -18,35 +18,35 @@ class BraveAdsOperatorConditionMatcherUtilInternalTest : public test::TestBase {
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest,
        DoNotParseNegativeDays) {
   // Act & Assert
-  EXPECT_FALSE(ParseDays("[=]:-1"));
+  EXPECT_FALSE(ParseDays("[T=]:-1"));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest, ParseDayZero) {
   // Act & Assert
-  EXPECT_EQ(0, ParseDays("[=]:0"));
+  EXPECT_EQ(0, ParseDays("[T=]:0"));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest, ParseDays) {
   // Act & Assert
-  EXPECT_EQ(7, ParseDays("[=]:7"));
+  EXPECT_EQ(7, ParseDays("[T=]:7"));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest,
        DoNotParseNonIntegerDays) {
   // Act & Assert
-  EXPECT_FALSE(ParseDays("[=]:1.5"));
+  EXPECT_FALSE(ParseDays("[T=]:1.5"));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest,
        DoNotParseMalformedDays) {
   // Act & Assert
-  EXPECT_FALSE(ParseDays("[=]: 7 "));
+  EXPECT_FALSE(ParseDays("[T=]: 7 "));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest,
        DoNotParseInvalidDays) {
   // Act & Assert
-  EXPECT_FALSE(ParseDays("[=]:seven"));
+  EXPECT_FALSE(ParseDays("[T=]:seven"));
 }
 
 TEST_F(BraveAdsOperatorConditionMatcherUtilInternalTest, IsUnixEpochTimestamp) {