News & Analysis as of

Denial of Institution Patent Ownership Intellectual Property Litigation

McDermott Will & Emery

Looks like estoppel, sounds like estoppel … but it’s just director discretion

McDermott Will & Emery on

The acting director of the US Patent & Trademark Office (PTO) granted a patent owner’s request for discretionary denial and denied institution of an inter partes review (IPR) proceeding, finding that the petitioner engaged in...more

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

Latest Director Discretionary Denial Decision in iRhythm Provides Valuable Insights

On June 6, 2025, Acting USPTO Director Stewart issued a decision in iRhythm Tech. v. Welch Allyn, Inc., IPR2025-00363, Paper 10 (and four related IPRs), which granted Patent Owner’s request for discretionary denial. This is...more

Jones Day

Failure to Make Full Sotera-Stipulation Contributes to Denial

Jones Day on

In an increasingly rare exercise of discretion, the PTAB denied institution of inter partes review under Fintiv in Zhuhai Cosmx Battery Co., Ltd. v. Ningde Amperex Technology Limited, IPR2023-00587. The PTAB reasoned that...more

Jones Day

Common Inventorship And Technology Insufficient For 325(d) Denial

Jones Day on

The PTAB recently declined to apply Section 325(d) and instituted inter partes review after a patent owner unsuccessfully argued that the petition relied on substantially the same prior art as that which the Office had...more

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