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In reference to the patent: US20100203636

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Patent application is abandoned due to "Failure to Respond to an Office Action". It is expired during the examination process.

You can use the USPTO's public PAIR database(https://portal.uspto.gov/pair/PublicPair) for legal status. If the patent is active then the patent term is 20 years from its own filing 35 U.S. Code § 154 (a)(2)

  • Could you add the way how you found this information so that the answer can help future visitors with the same question for another patent? – DonQuiKong Apr 11 '17 at 10:57
  • In addition, the cited document is an application, not a patent. – Eric Shain Apr 11 '17 at 12:22

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