Short Summary
iRhythm petitions the PTAB to institute IPR on Welch Allyn’s 9,155,484 wearable ECG sensor patent, asserting obviousness over Matsumura, Jensen and Ozguz. The petition argues no discretionary denial factors apply and seeks cancellation of all challenged claims.
Detailed Summary
In Petition IPR2025-00376, iRhythm, Inc. requests the Patent Trial and Appeal Board to institute inter partes review of claims 1‑8, 11‑12, and 15‑20 of U.S. Patent No. 9,155,484, which covers a body‑worn physiological sensor with a detachable computation‑communication module and flexible circuit layer. The petitioner alleges that the claims are unpatentable under 35 U.S.C. § 103, presenting four grounds of obviousness based on the Matsumura, Jensen, and Ozguz references combined with general POSA knowledge. The petition further contends that none of the statutory factors under §§ 314(a) or 325(d) warrant a discretionary denial, and therefore asks for cancellation of the challenged claims. The proceeding is linked to a parallel district‑court infringement suit (Welch Allyn v. iRhythm).
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in iRhythm, Inc. vs Welch Allyn, Inc. et al. is valuable context for structuring arguments or assessing risk in similar proceedings.
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