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Patents: Pharmaceuticals

Many drugs and biologically active chemicals have been patented. The American Chemical Society estimates that more than half of all new chemical substances are disclosed first in patent applications. Here are some resources for locating patents that cover specific drugs.
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Drug Patent Register Canadian resource
Health Canada
Alphabetical listing of medicines and the associated patents, patent expiry dates and other related information. Search by active ingredient, brand name, Drug Information Number (DIN) and patent number.
Covers 10,000 chemicals, drugs and biologicals. Literature references include key patents.
Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations
U.S. Food & Drug Administration
Covers prescription drug products, over-the-counter drugs and discontinued drugs. Search by active ingredient, brand name, owner and patent number.
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Last Updated: 22 April 2010