How do I find a patent expiry schedule for major drug companies?

I an researching various big pharma stocks (GSK, Eli Lilly, Sanofi) and would like to understand more about when their key drugs come off patent, as this has significant effects on their profitability

many thanks for any ideas on getting this info

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  • 1 decade ago
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    There is no simple schedule available. If the patent was filed after June 7, 1995 then the patent expires 20 years from the earliest priority date. You also may have to add any patent term extension and take into account any terminal disclaimer. Also the term of the patent may be extended by the United States the Drug Price Competition and Patent Term Restoration Act of 1984. So it is not a simple answer. A patent attorney can help you.

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