When will the imitrex patent expire?

Answer Drug patents are extended for fourteen years from the original first sale date. Imitrex STATdose expired in December of 2006, while Imitrex tablets expired in 2009. Imitrex nasal spray will expire ... Read More »

Top Q&A For: When will the imitrex patent expire

When does the Imitrex patent expire?

Imitrex (sumatriptan succinate) is a migraine relief medicine developed by GlaxoSmithKline (GSK). It is taken orally or through the nasal cavities. The Imitrex patent expired in February 2009, afte... Read More »

Does a patent expire?

Yes. In the United States, patents expire 20 years after the patent holder submits the application. Patents on designs, however, expire 14 years after the patent is granted. While some pharmaceuti... Read More »

When does the lipitor patent expire?

The patent on Lipitor (atorvastatin calcium) expires in June 2011. Lipitor is a leading cholesterol-cutting drug. Its maker is Pfizer Inc., one of the world's largest pharmaceutical companies. T... Read More »

When does the patent expire for seroquel?

AstraZeneca manufactures Seroquel, a drug used to treat bipolar disorder and schizophrenia. The patent for Seroquel expires in September 2011. In December 2008, Teva Pharmaceuticals received tentat... Read More »