Marble VOIP Partners LLC has filed its first
litigation, suing Microsoft (6:22-cv-00076) in a new Western District of
Texas complaint over a single patent generally related to using the
Session Initiation Protocol (SIP) to enable VoIP in applications.
Targeting the provision of its communication platforms, including
Microsoft Teams and Skype for Business, the Texas NPE is associated
with a set of figures familiar to patent monetization.
The asserted patent (7,376,129) issued to IBM in
May 2008 with an estimated priority date in October 2003. In
September 2019, IBM assigned the '129 patent to NPE Daedalus Group LLC as one of more than 500
assets transferred, with Daedalus Group subsequently moving it to
Slingshot IOT LLC (together with over 60
patents), which passed ownership to Quartz Auto Technologies, LLC in February
2020. That transaction involved 18 US patents, nine of which Quartz
Auto has been litigating in a campaign begun in February 2020 that
remains active
