In 1965 he founded Research Frontiers to exploit a related expired patent of Land's.
According to the 2010 RBC Capital Markets study, when trial victories, settlements between drugmakers and dropped cases are combined, generic companies were able to bring their product to market before the brand-name drug's patent expired in 76 percent of the 371 drug patent suits decided from 2000 through 2009.
Since the patent expired in 2000, the market has shifted to the generic version.
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Xalatan, an eye care drug, will also weigh on growth as European patent expired in January 2012.
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Trying to maximize their savings, health plans and pharmacy benefit managers started to switch patients long before the patent expired.
In fact, Denaro says the patent expired in May of this year.
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While Lipitor patent expired in Q4 2011, generics were available only for a month as against full three months in Q4 2012.
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Ranbaxy, a Japanese-owned drugmaker, struggled to get regulators' approval for its generic version of Lipitor, and only won it on the day the patent expired.
The drug's patent expired months ago, but it was only recently that Genpharm and Mylan (nyse: MYL - news - people ) got their generic versions of the drug passed through the FDA. Roche is counting on Pegasys and Fuzeon, an AIDS drug developed by Trimeris (nasdaq: TRMS - news - people ) to not only maintain sales, but grow them.
The patent protecting the active chemical in the drug has already expired, but a second patent, on using that chemical as a muscle relaxant, is valid until December 2021.
The patent on Suboxone tablets, in fact, expired two years ago, while patent on Suboxone Film expires in 2022, according to the Reckitt spokesman.
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The Brazilian company launched its latest G-Gradiente iPhone just 15 days before its patent rights expired.
Dr Zuma wants to promote generic instead of more expensive brand-named pills whose patent has expired and which can therefore be made locally.
This was an easy thing to do, as chemical giant DuPont was eager to replace its patent-expired CFC Freon, once it patented a substitute hydroclorflourocarbon.
Making a tourbillon was not within reach of all watchmakers, and only the finest proved capable of producing one after the 10-year patent had expired.
In return, Apotex would launch a generic in 2011, eight months before a key patent actually expired but years after a generic might have become available.
Indianapolis-based Eli Lilly has been battered since the patent on Prozac expired last year.
Even though the patent has now expired, Takeda maintains a de facto monopoly because no other drug company has figured out how to produce microcapsules of similar quality.
The composition of matter patent for this drug expired on May 17, 2012 in the U.S., and the sales of this drug have plummeted almost 65% since due to intense competition from generic drugs.
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AstraZeneca's main patent covering the drug expired last October, but the company has managed to keep copycats at bay by suing generic firms for infringing patents, not on the medicine, but on the way it is assembled into a pill.
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