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Chinese Patent Office
US Department of Justice
Fish and Richardson
US Army
Boehringer Ingelheim
Cantor Fitzgerald
Farmers Insurance

Most drug patent challenges last year

This chart shows the generic firms that had the most successful drug patent challenges last year.

Companies that successfully challenge patents on branded drugs are granted six months of generic exclusivity. And, because first-to-market generics tend to sell at 70% or more of the price of the branded drug, the financial rewards stemming from the market exclusivity granted for drug patent challenges can more than cover the subtantial costs of drug patent challenge and associated litigation.

The most successful patent challengers in 2017 were

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