MRK · News · 20260915N

Keytruda Patent Expiration Outlook

Merck & Co., Inc. · 2026-09-15 · Importance 44 · Surprise 24

A third-party comparison of Merck and Eli Lilly describes Merck as facing a patent cliff while Lilly is viewed as expanding its franchise. The report characterizes Merck as working to address the impending gap in its portfolio. The excerpt does not provide specific patent dates, geographic markets, or quantified demand and market-share data.