When will there be a generic Fondaparinux?

Answer 1

In the US, a drug patent lasts twenty years, if patented after 1995 (17years prior). New drugs usually have multiple patients covering numerous aspects of the agent and the manufacturing process. Generics can be introduced after the patent expires. However, the drug companies apply for the patent when the drug is discovered, then it has to be studied to prove safety and efficacy before the drug reaches the market (5-10years) A generic version typically appears 7-10 years after the patented version. Originators typically sue generic companies over a number of years to protect their patents. Originators also have been granted patent extensions under special circumstances.