An NPE controlled by York Eggleston has hit a roadblock in its effort to reverse a 2019 patent transaction involving a portfolio of patents sold to Acacia Research Corporation, with a Vice Chancellor of the Delaware Court of Chancery recently granting the seller, Transpacific IP Group Limited, summary judgment. This ruling closely follows the voluntary dismissal of another case filed by a different Eggleston NPE, which had sought to unwind BlackBerry’s patent sale to Malikie Innovations Limited.