Streamlight, Inc. sued Laser Defense Manufacturing LLC for patent infringement of two utility and two design patents in the U.S. District Court for the Eastern District of Pennsylvania. The patents in suit are U.S. Patent Nos. 7,188,978; 7,614,760; D543,446; and D548,385, which relate to a clamping arrangement and the associated fastening bolt design for mounting a light to a firearm rail. This case is similar to previous patent litigation filed by Streamlight last February against Longhorn Tactical, LLC, in the same court on the same four patents, which we reported in our March 2011 edition of the SHO Industries IP Update. The present litigation is case no. 2:11-cv-05996-AB, filed on September 21, 2011.