Statutory Invention Registrations (SIRs) replaced Defensive Publications in the USPTO system. As stated in MPEP 901.06(d): “On May 8, 1985, the U.S. Patent and Trademark Office stopped accepting Defensive Publication requests and began accepting applications for Statutory Invention Registrations (SIRs), although there was an overlap period where both Defensive Publications and Statutory Invention Registrations were…

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