Today, Pitney Bowes announced that it has filed a lawsuit in California Central District Court against Zumbox, alleging that Zumbox’s paperless mail service infringes on its U.S. patents: No. 7,478,140; No. 7,058,586; and No. 6,690,773.  Pitney Bowes said the lawsuit seeks to enjoin Zumbox from further infringement, among other things.

Though known for traditional mail services, Pitney Bowes has expanded its capabilities into online communications, with more than $200 million invested in research and development in 2008, mostly in software products.   Recently, Pitney Bowes was ranked #107, in Software Magazine’s Software 500, with software revenue of $400 million.

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