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part52.dev Federal Acquisition Clause Monitor
This PGI section supplements: DFARS 252.227-7000 · FAR 52.227-7000
The corresponding FAR Part 52 and DFARS Part 252 have been overhauled under the RFO. PGI replacement text is provided in the RFO deviation attachment. View FAR Part 52

Current Content

As prescribed at 227.7009-1 , insert the following clause in patent releases, license agreements, and assignments:

NON-ESTOPPEL (OCT 1966)

The Government reserves the right at any time to contest the enforceability, validity, scope of, or the title to any patent or patent application herein licensed without waiving or forfeiting any right under this contract.

(End of clause)

Change History

Detected Type Summary
detected 2026-04-17 [PGI] PGI_MODIFIED PGI 252.227-7000 updated: 2 lines added, 6 lines removed
View diff
--- previous
+++ current
@@ -1,6 +1,2 @@
-As prescribed at 
-               227.7009-1
-            , insert the following clause in patent releases, license agreements, and assignments:
-         NON-ESTOPPEL (OCT 1966)
-         The Government reserves the right at any time to contest the enforceability, validity, scope of, or the title to any patent or patent application herein licensed without waiving or forfeiting any right under this contract.
-         (End of clause)+As prescribed at 227.7009-1, insert the following clause in patent releases, license agreements, and assignments: NON-ESTOPPEL (OCT 1966) The Government reserves the right at any time to contest the enforceability, validity, scope of, or the title to any patent or patent application herein licensed without waiving or forfeiting any right under this contract.
+(End of clause)
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