Medicines losing patent protection

MonthYear

May 2026

3 medicines lost their last listed patent or exclusivity in May 2026.

May 12Lexaproescitalopram oxalate · Abbvie Inc
May 16Gattex Kitteduglutide · Takeda Pharmaceuticals USA Inc
May 16Kuvansapropterin dihydrochloride · Biomarin Pharmaceutical Inc

Dates are the patent and exclusivity end dates listed in the FDA's Orange Book, in its data up to October 9, 2026. Patents can be extended, challenged in court or settled, so a generic may come earlier, later or not at all. This is not legal or medical advice.

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