LWRC Interational, manufacturer of AR-15 rifles for consumers and military, are suing SIG Sauer. LWRC claims SIG’s SIG516 line of piston-operated AR-15 rifles infringes upon their U.S. patent #7461581 “Self-cleaning gas operating system for a firearm”.

SIG516 Patrol Rifle

LWRC claims it is suffering irreparable damage and is asking the court for a preliminary injunction to prevent further infringement of their IP.

At least in the firearm industry, cases like these are almost always settled out of court. (more…)