Sony (1:21-cv-01663) has been sued in the District of Delaware by an entity created in that state this past April, MZ Audio Sciences, LLC. A single patent generally related to “embedding data in an audio signal” is asserted against the alleged use by Sony (and by several of its various subsidiaries) of Cinavia, a copy protection technology introduced by Verance over a decade ago, within certain Blu-Ray players and PlayStation consoles. MZ Audio pleads that the named inventors of the asserted patent, two University of Rochester professors, overcame shortfalls in the prior art by introducing audio watermarking “undetectable and robust to blind signal processing attacks and . . . uniquely robust to digital to analog conversion processing”.