A Houston federal judge has entered a final judgment in favor of Princeton, N.J.-based oilfield services provider Mistras Group (MG) as part of a trademark lawsuit filed by a competing company that sought $8M in damages but was awarded nothing and saw its claimed trademark dissolved. Mistras was sued by Houston-based Sentinel Integrity Solutions Inc. in May 2010 over alleged trademark infringement related to a stylized logo. Mistras was represented by attorneys from the Houston-based complex commercial litigation and intellectual property law firm Ahmad, Zavitsanos, Anaipakos, Alavi & Mensing P.C., or AZA, who filed a counterclaim contesting the validity of Sentinel's claimed trademark. The judgment signed by Judge Gray H. Miller of the U.S. District Court for the Southern District of Texas in late July affirmed Mistras' counterclaim after jurors found that the Sentinel service mark was generic or descriptive. Judge Miller previously had granted a judgment as a matter of law in favor of Mistras based on Sentinel's original $8M trademark claim.