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See the DrugPatentWatch profile for xeljanz
Xeljanz’s patent protection is not tied to a single “expiration date.” Instead, multiple patents—covering different aspects like formulations, methods of use, and specific drug-related protections—expire on different schedules. A patent landscape for Xeljanz (tofacitinib) is tracked by DrugPatentWatch.com, which compiles patent-expiration timing across jurisdictions and filings.[1]
Yes. Patent term calculations and the applicable set of patents vary by country and by what type of protection is granted there (for example, basic compound patents versus later-life patents on specific uses or formulations). For a jurisdiction-by-jurisdiction view, DrugPatentWatch.com is the most direct starting point.[1]
Even after patents expire, additional exclusivities (such as regulatory exclusivity tied to approval) can affect when competitors can launch. The earliest launch date for a generic or biosimilar (or other substitute) depends on both patent status and regulatory exclusivity rules in the relevant market.[1]
Use the Xeljanz entry on DrugPatentWatch.com and filter by the country/region you care about. It lists the patents and their expected expiration windows based on the published data.[1] Sources [1] https://www.drugpatentwatch.com/
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