diff --git a/test/invariants/handlers/BaseHandler.t.sol b/test/invariants/handlers/BaseHandler.t.sol
index da1edae..c6b016d 100644
--- a/test/invariants/handlers/BaseHandler.t.sol
+++ b/test/invariants/handlers/BaseHandler.t.sol
@@ -8,6 +8,8 @@ import {Actors} from '../helpers/Actors.t.sol';
 contract BaseHandler is Setup, Actors {
   // Track all created request IDs
   bytes32[] internal _ghost_requests;
+  // Track all created request IDs per epoch and chainId
+  mapping(uint256 _epoch => mapping(string _chainId => bytes32[] _requestIds)) internal _ghost_requestsPerEpochChainId;
 
   // Track request details
   mapping(bytes32 _requestId => IOracle.Request _data) internal _ghost_requestData;
@@ -33,7 +35,7 @@ contract BaseHandler is Setup, Actors {
   mapping(address _pledger => mapping(bytes32 _disputeId => uint256 _pledgedAmount)) internal _ghost_pledgesAgainst;
 
   // Helper functions
-  function _boundEpoch(uint256 _epoch) internal view returns (uint256) {
+  function _boundEpoch(uint256 _epoch) internal pure returns (uint256) {
     return bound(_epoch, START_EPOCH, START_EPOCH + 1000);
   }
 
@@ -50,7 +52,7 @@ contract BaseHandler is Setup, Actors {
     return chains[_seed % 3];
   }
 
-  function _getRandomRequest(uint256 _seed) internal view returns (bytes32) {
+  function _getRandomRequestId(uint256 _seed) internal view returns (bytes32) {
     if (_ghost_requests.length == 0) return bytes32(0);
     return _ghost_requests[_seed % _ghost_requests.length];
   }
diff --git a/test/invariants/handlers/HandlerBondEscalationModule.t.sol b/test/invariants/handlers/HandlerBondEscalationModule.t.sol
index 3861603..25aa180 100644
--- a/test/invariants/handlers/HandlerBondEscalationModule.t.sol
+++ b/test/invariants/handlers/HandlerBondEscalationModule.t.sol
@@ -5,7 +5,7 @@ import {BaseHandler, IOracle} from './BaseHandler.t.sol';
 
 contract HandlerBondEscalationModule is BaseHandler {
   function handlePledgeForDispute(uint256 _requestSeed, uint256 _disputeIndex, uint256 _actorSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -22,7 +22,7 @@ contract HandlerBondEscalationModule is BaseHandler {
   }
 
   function handlePledgeAgainstDispute(uint256 _requestSeed, uint256 _disputeIndex, uint256 _actorSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -39,7 +39,7 @@ contract HandlerBondEscalationModule is BaseHandler {
   }
 
   function handleSettleBondEscalation(uint256 _requestSeed, uint256 _disputeIndex) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
diff --git a/test/invariants/handlers/HandlerBondedResponseModule.t.sol b/test/invariants/handlers/HandlerBondedResponseModule.t.sol
index 7a1822b..3665a66 100644
--- a/test/invariants/handlers/HandlerBondedResponseModule.t.sol
+++ b/test/invariants/handlers/HandlerBondedResponseModule.t.sol
@@ -5,7 +5,7 @@ import {BaseHandler, IOracle} from './BaseHandler.t.sol';
 
 contract HandlerBondedResponseModule is BaseHandler {
   function handleReleaseUnutilizedResponse(uint256 _requestSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Response memory response = _getRandomActiveResponse(requestId, _requestSeed);
diff --git a/test/invariants/handlers/HandlerCouncilArbitrator.t.sol b/test/invariants/handlers/HandlerCouncilArbitrator.t.sol
index ed08aa2..59c7707 100644
--- a/test/invariants/handlers/HandlerCouncilArbitrator.t.sol
+++ b/test/invariants/handlers/HandlerCouncilArbitrator.t.sol
@@ -5,7 +5,7 @@ import {BaseHandler, IOracle} from './BaseHandler.t.sol';
 
 contract HandlerCouncilArbitrator is BaseHandler {
   function handleArbitrateDispute(uint256 _requestSeed, uint256 _disputeIndex, uint256 _statusSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
diff --git a/test/invariants/handlers/HandlerEBORequestCreator.t.sol b/test/invariants/handlers/HandlerEBORequestCreator.t.sol
index 74780b5..5bda157 100644
--- a/test/invariants/handlers/HandlerEBORequestCreator.t.sol
+++ b/test/invariants/handlers/HandlerEBORequestCreator.t.sol
@@ -16,9 +16,6 @@ contract HandlerEBORequestCreator is BaseHandler {
     _epoch = _boundEpoch(_epoch);
     string memory chainId = _generateChainId(_chainIdSeed);
 
-    // Prevent duplicate chainId for same epoch
-    if (_ghost_epochChainIds[_epoch][chainId]) return;
-
     // Create request via EBORequestCreator
     eboRequestCreator.createRequest(_epoch, chainId);
 
@@ -37,6 +34,7 @@ contract HandlerEBORequestCreator is BaseHandler {
 
     // Track the request
     _ghost_requests.push(requestId);
+    _ghost_requestsPerEpochChainId[_epoch][chainId].push(requestId);
     _ghost_requestData[requestId] = requestData;
     _ghost_validRequests[requestId] = true;
     _ghost_epochChainIds[_epoch][chainId] = true;
diff --git a/test/invariants/handlers/HandlerHorizonAccountingExtension.t.sol b/test/invariants/handlers/HandlerHorizonAccountingExtension.t.sol
index 5d1abde..3f805c0 100644
--- a/test/invariants/handlers/HandlerHorizonAccountingExtension.t.sol
+++ b/test/invariants/handlers/HandlerHorizonAccountingExtension.t.sol
@@ -16,7 +16,7 @@ contract HandlerHorizonAccountingExtension is BaseHandler {
 
   function handlePledge(uint256 _pledgerSeed, uint256 _requestSeed, uint256 _disputeIndex, uint256 _amount) external {
     address pledger = _pickActor(_pledgerSeed);
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -32,7 +32,7 @@ contract HandlerHorizonAccountingExtension is BaseHandler {
     uint256 _amountPerPledger,
     uint256 _winningPledgersLength
   ) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -45,7 +45,7 @@ contract HandlerHorizonAccountingExtension is BaseHandler {
   }
 
   function handleClaimEscalationReward(uint256 _requestSeed, uint256 _disputeIndex, uint256 _actorSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -68,7 +68,7 @@ contract HandlerHorizonAccountingExtension is BaseHandler {
     uint256 _usersToSlash,
     uint256 _maxUsersToCheck
   ) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
diff --git a/test/invariants/handlers/HandlerOracle.t.sol b/test/invariants/handlers/HandlerOracle.t.sol
index 0714b44..f1ba3c9 100644
--- a/test/invariants/handlers/HandlerOracle.t.sol
+++ b/test/invariants/handlers/HandlerOracle.t.sol
@@ -5,7 +5,7 @@ import {BaseHandler, IOracle} from './BaseHandler.t.sol';
 
 contract HandlerOracle is BaseHandler {
   function handleCreateRequest(uint256 _requestSeed, bytes32 _previousId) external returns (bytes32) {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return bytes32(0);
 
     return oracle.createRequest(_ghost_requestData[requestId], _previousId);
@@ -16,7 +16,7 @@ contract HandlerOracle is BaseHandler {
     uint256 _blockNumber,
     uint256 _actorSeed
   ) external returns (bytes32) {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0) || !_ghost_validRequests[requestId]) {
       return bytes32(0);
     }
@@ -40,7 +40,7 @@ contract HandlerOracle is BaseHandler {
   }
 
   function handleDisputeResponseOracle(uint256 _requestSeed, uint256 _actorSeed) external returns (bytes32) {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0) || !_ghost_validRequests[requestId]) {
       return bytes32(0);
     }
@@ -70,7 +70,7 @@ contract HandlerOracle is BaseHandler {
   }
 
   function handleEscalateDispute(uint256 _requestSeed, uint256 _disputeIndex) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -83,7 +83,7 @@ contract HandlerOracle is BaseHandler {
   }
 
   function handleResolveDispute(uint256 _requestSeed, uint256 _disputeIndex) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     IOracle.Dispute memory dispute = _getRandomDispute(requestId, _disputeIndex);
@@ -94,7 +94,7 @@ contract HandlerOracle is BaseHandler {
   }
 
   function handleFinalize(uint256 _requestSeed) external {
-    bytes32 requestId = _getRandomRequest(_requestSeed);
+    bytes32 requestId = _getRandomRequestId(_requestSeed);
     if (requestId == bytes32(0)) return;
 
     if (_ghost_activeResponses[requestId].length == 0) return;
diff --git a/test/invariants/helpers/Utils.t.sol b/test/invariants/helpers/Utils.t.sol
index b74fbd4..846fdb7 100644
--- a/test/invariants/helpers/Utils.t.sol
+++ b/test/invariants/helpers/Utils.t.sol
@@ -68,6 +68,17 @@ contract Utils {
     }
   }
 
+  function assertNotEq(uint256 a, uint256 b) internal {
+    assertNotEq(a, b, 'assertNotEq: a == b');
+  }
+
+  function assertNotEq(uint256 a, uint256 b, string memory reason) internal {
+    if (a == b) {
+      emit TestFailure(reason);
+      assert(false);
+    }
+  }
+
   function assertEq(address a, address b) internal {
     assertEq(a, b, 'assertEq: a != b');
   }
@@ -79,6 +90,17 @@ contract Utils {
     }
   }
 
+  function assertNotEq(address a, address b) internal {
+    assertNotEq(a, b, 'assertNotEq: a == b');
+  }
+
+  function assertNotEq(address a, address b, string memory reason) internal {
+    if (a == b) {
+      emit TestFailure(reason);
+      assert(false);
+    }
+  }
+
   function assertEq(bytes memory a, bytes memory b) internal {
     assertEq(a, b, 'assertEq: a != b');
   }
@@ -96,6 +118,22 @@ contract Utils {
     }
   }
 
+  function assertNotEq(bytes memory a, bytes memory b) internal {
+    assertNotEq(a, b, 'assertNotEq: a == b');
+  }
+
+  function assertNotEq(bytes memory a, bytes memory b, string memory reason) internal {
+    if (a.length == b.length) {
+      for (uint256 i = 0; i < a.length; i++) {
+        if (a[i] != b[i]) {
+          return;
+        }
+      }
+      emit TestFailure(reason);
+      assert(false);
+    }
+  }
+
   function assertTrue(bool a) internal {
     assertTrue(a, 'assertTrue: !a');
   }
diff --git a/test/invariants/properties/PropertyEBORequestCreator.t.sol b/test/invariants/properties/PropertyEBORequestCreator.t.sol
index d212864..07e7c39 100644
--- a/test/invariants/properties/PropertyEBORequestCreator.t.sol
+++ b/test/invariants/properties/PropertyEBORequestCreator.t.sol
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.26;
 
+import {IEBORequestModule, IOracle} from '../Setup.t.sol';
 import {HandlerParent} from '../handlers/HandlerParent.t.sol';
 
 contract PropertyEBORequestCreator is HandlerParent {
@@ -10,9 +11,35 @@ contract PropertyEBORequestCreator is HandlerParent {
   /// @custom:property-id 1
   /// @custom:property Requester can always create a request as long as the same chainId/epoch isn't requested yet
   function property_canAlwaysCreateRequest(uint256 _epoch, uint256 _chainIdSeed) external {
-    try HandlerParent(this).handleCreateRequest(_epoch, _chainIdSeed) {}
+    _epoch = _boundEpoch(_epoch);
+    string memory chainId = _generateChainId(_chainIdSeed);
+
+    // Prevent duplicate chainId for same epoch
+    if (_ghost_epochChainIds[_epoch][chainId]) return;
+
+    // Create request via EBORequestCreator
+    try eboRequestCreator.createRequest(_epoch, chainId) {}
     catch {
       assert(false);
     }
   }
+
+  /// @custom:property-id 2
+  /// @custom:property There can only be one active request per chainId/epoch at a time
+  function property_onlyOneActiveRequest(uint256 _requestIdSeed) external {
+    bytes32 requestId = _getRandomRequestId(_requestIdSeed);
+    if (requestId == bytes32(0)) return;
+
+    IOracle.Request memory requestData = _ghost_requestData[requestId];
+    IEBORequestModule.RequestParameters memory requestParams =
+      abi.decode(requestData.requestModuleData, (IEBORequestModule.RequestParameters));
+
+    uint256 requestsPerEpochChainId = _ghost_requestsPerEpochChainId[requestParams.epoch][requestParams.chainId].length;
+    if (requestsPerEpochChainId < 2) return;
+
+    for (uint256 i; i < requestsPerEpochChainId - 1; ++i) {
+      requestId = _ghost_requestsPerEpochChainId[requestParams.epoch][requestParams.chainId][i];
+      assertNotEq(oracle.finalizedAt(requestId), 0);
+    }
+  }
 }