Zenni Optical has won a patent dispute with Aspex Eyewear relating to the use of magnets to connect the bridges of eyeglasses and clip-on sunglasses. In 2002, Aspex sued Altair Eyewear, distributor of Tommy Bahama sunglasses, believing that Altair had been marketing and selling a magnetic clip-on sunglass product infringing their patent. The case ended in 2007, when a New York District Court judge ruled that Altair products did not infringe on Aspex's patents. Aspex later appealed the case and lost. More recently, Aspex sued Zenni Optical, basing its claims on the same patents involved in the Altair case, namely U.S. Patent Nos. 5,737,054,  6,012,811 and 6,092,896. When Aspex brought the new action against Zenni Optical and another company over the same three patents, a U.S. district judge granted a request for summary judgment made by Zenni in 2012, citing the decision in the Altair case. Aspex once again appealed but the Federal Circuit Court found that the two companies' allegedly infringing clip-on sunglass lenses were virtually identical to the Altair case and that neither infringed on any of the Aspex patents. Following the ruling, Zenni will be able to continue to sell its line of magnetic snap-on sunglasses without interruption.