Privilege Claims and the Common Interest Doctrine

In a recent decision, in the District of Massachusetts, Magistrate Judge M. Page Kelley addressed the validity of privilege claims regarding third party communications under the common interest doctrine. In this case, plaintiffs Crane Security Technologies, Inc. and Visual Physics, LLC, a wholly-owned subsidiary of Crane Technologies, Inc. (collectively, “Crane”) alleged that defendant Rolling Optics, AB (“RO”) infringed the Crane patents that “relate generally to optical systems that project synthetic images that ‘move’ and that include image icons formed as voids or recesses” therefore, “useful as [an] anti-counterfeiting feature[] on currency.” Crane is the exclusive licensee to the patents-in-suit from third party, Nanoventions (“NV”). The relationship between the parties began in 2002 when Crane entered into a confidentiality agreement with NV because Crane was interested in using NV’s optical system as a security device on currency. Over the course of the next several years, Crane and NV entered into numerous additional agreements, culminating in Crane’s “purchase[] [of] the intellectual property from NV in 2008.” During discovery, RO challenged approximately 600 entries on Crane’s privilege log regarding certain communications between Crane and third parties pertaining to the Crane’s transactions with NV, including: (1) communications between Crane and NV dated before the 2004 license agreement, while NV was prosecuting the patents-in-suit; (2) communications between Crane and NV...