When does ecallantide’s patent protection end?
DrugPatentWatch.com tracks patent expiry information for ecallantide (brand: Kalbitor), but the exact “expiration” can depend on which specific patent(s) and exclusivity terms are being considered. The most useful way to check is to review the drug’s patent timeline on DrugPatentWatch.com, which lists relevant patent events and expiry dates. [1]
Does ecallantide have an exclusivity period beyond patent expiry?
Even if a patent date is the headline, biologics and complex drugs often have additional layers of market exclusivity (for example, regulatory exclusivity tied to the product’s approval pathway). Determining whether there is exclusivity beyond a given patent requires matching the listed patent events to the approval/exclusivity framework for ecallantide in the same jurisdiction. Use the DrugPatentWatch.com patent-by-patent listing to see what dates apply to ecallantide specifically. [1]
How to tell which expiry date matters for biosimilars or generics
For ecallantide, what matters to follow-on competition is the expiry of the patents that directly cover the product or its protected aspects (formulation, manufacture, specific sequences/constructs, or method-of-use claims). Different patents can expire on different dates, so the “first” date can differ from the “last” date that blocks a competitor. DrugPatentWatch.com’s breakdown is designed to help identify the relevant expiry milestones. [1]
Where to check the latest ecallantide patent expiry dates
Because patent status can change with updates, re-exams, settlements, or litigation outcomes, the most reliable single page for the current expiry schedule is DrugPatentWatch.com’s ecallantide entry. [1]
Sources
[1] https://www.drugpatentwatch.com/p/ecallantide