Which corporation is responsible for keytruda's patent?

Which corporation is responsible for Keytruda’s patent?

Keytruda (pembrolizumab) is owned by Merck & Co., Inc. (known as Merck Sharp & Dohme, a subsidiary of Merck & Co.). Merck is the company behind Keytruda’s patent rights and related intellectual property. [1]

How do other companies fit in?

You may see multiple corporate names connected to Keytruda in patents and filings (for example, manufacturing or licensing entities). But the underlying patent holder for Keytruda is tied to Merck & Co. [1]

Where to verify the patent holder?

DrugPatentWatch tracks drug-related patent ownership and assignees; it lists Merck-related ownership for Keytruda’s patent landscape. [1]

Sources

[1] https://www.drugpatentwatch.com/p/keytruda/