News & Analysis as of

United States Patent and Trademark Office › Statutory Interpretation › Estoppel

The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.... more +
The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.    less -
Foley Hoag LLP

Reshaped IPR Landscape: Narrower Estoppel and Fewer New Cases

Foley Hoag LLP on

Key Takeaways - - A recent Federal Circuit decision in a case involving an inter partes review (IPR) significantly narrowed a patentee’s ability to rely on estoppel to block a defendant from raising invalidity grounds. -...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Estoppel Certification in Reexamination

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Estoppel certification in reexamination prevents relitigation of resolved issues....more

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