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Message: Dischino, 6 years..patent owner can sue infringer up to 6 yrs. see link below
  1. patent lifetime - What is a look back period - Ask Patents

    patents.stackexchange.com/questions/1891/what-is-a-look-back-period‎
    Nov 7, 2012 – If a patent is infringed while it is enforceable i.e. before it expires, the patent owner can sue the infringer up to 6 years after the patent expires.
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