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Drop-in trigger groups are hardly new…and that’s now a legal fact as of last week. Mossberg had been issued a patent on the idea of a drop-in cassette trigger in 2007. In 2016 they decided to start enforcing that patent more stringently by filing a lawsuit against more than a dozen drop-in trigger manufacturers including KE Arms, Timney, and Franklin Armory. Word now comes from a source close to one of those respondents that Mossberg’s patent has been invalidated, which will most likely mean the end of those suits.

The ruling states that through a combination of a couple existing patents Mossberg’s patent for their drop-in trigger was obvious and non-patentable. The biggest issue was a Taiwanese patent for a drop-in cassette trigger for the M16 platform, combined with patents for Jewell and others.

There’s no word yet as to what Mossberg will be doing in regards to their actions against the dozen or so trigger manufacturers. Stay tuned.

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31 COMMENTS

  1. My guess, Mossberg will dismiss the lawsuits and fight it out with the USPTO first. But this is hardly the end of the fight, as Mossberg can appeal the USPTO’s exparte decision.

  2. I think the unit the in the picture is faulty. Shouldn’t the sear be holding the hammer if the hammer is back like that?

  3. Maybe now their service department will have time to finally respond to my e-mail

    butt,

    and it appears to be a real big butt, i doubt it.

  4. I invented a buffer tube that charged electronic devices on an AR15.
    Then I looked up the patent and it already exists. I think it was patented in 2009. Wonder why no one developed it.

  5. Mossberg wasn’t issued the patent, they bought it off McCormick/CMC, because CMC felt like they didn’t have the funds to defend their patent. I used to follow CMC on instagram, and “patent infringement” was a very sore point for whoever managed that account for a while.

  6. CMC isn’t a Christian company. Their actions violate so many tenets of Christianity it should boggle every believer’s mind. They attacked other small businesses, as a deliberate plan, with Soros’s money. They will never see another dollar from me or mine and I urge all of you to do likewise. Total scum.

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