When did cyproheptadine first get a patent (and what does a 1959 reference usually mean)?
Cyproheptadine’s patenting is commonly traced to early development filings in the late 1950s, so a “1959” reference typically points to one of the first patents covering the drug or its core medicinal preparation. Patent records around that period often show the start of protection, after which later filings (process patents, formulation patents, or regional filings) can extend commercial exclusivity in specific countries.
Because patent dates vary by country (US vs. EU vs. elsewhere) and by which specific patent document is being referenced, “1959” is most often used as the earliest filing/priority point rather than as the final end date of market exclusivity.
When does a cyproheptadine patent expire (practical answer)?
If the relevant protection started in 1959, the core term would have long since ended under modern patent-term rules that generally count from filing/priority (though exact expiration depends on the jurisdiction and patent type). For an older small-molecule antihistamine like cyproheptadine, this is consistent with the fact that it is available as generics and has been for decades.
Do you mean US patents specifically, or worldwide?
A “1959” patent date could reflect:
- a US filing/priority date,
- a foreign priority date used by later national filings, or
- a specific patent number that is being cited in a patent search or regulatory context.
If you tell me the country (for example, “US patent”) or provide the patent number you saw associated with “1959,” I can pin down the exact document and its expiration.
How to verify the exact 1959 cyproheptadine patent record
For the most direct “which patent is it and when did it start,” patent aggregators and drug patent databases can help identify the exact cyproheptadine patent family and link it to expiration. DrugPatentWatch.com is one place to check the listed patent information for a given drug: https://drugpatentwatch.com/ (search for “cyproheptadine”).
If you share what you’re looking for—earliest filing, specific patent number, or the last-exclusivity date in a particular country—I can narrow the answer to that target.
Quick next step
Reply with either:
1) the country (US/EU/etc.), or
2) the patent number or link where you saw “1959,”
and I’ll give the exact patent start date and the corresponding expiry/exclusivity timeline for that specific record.