News & Analysis as of

Statutory Interpretation United States Patent and Trademark Office New Guidance

Wilson Sonsini Goodrich & Rosati

Patent Office Denial of “Late” Inter Partes Review Petitions Changes Expectations

On June 6, 2025, the acting Director of the U.S. Patent and Trademark Office (USPTO), Coke Morgan Stewart, issued a decision in iRhythm Technologies v. Welch Allyn, Inc.1 that initiates a new basis for discretionary denial...more

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

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