In a recently unsealed order, a Delaware federal judge last week chipped away at some of Intellectual Ventures’ infringement contentions against AT&T Mobility, finding that the plaintiff had not provided adequate notice for its literal infringement theory for a patent.

Chief Judge Leonard P. Stark of the U.S. District Court for the District of Delaware said in the partially redacted memorandum order that Bellevue, Washington-based Intellectual Ventures had refused to adopt the court’s claim construction in its entirety and appeared instead to rely on its own proposed construction, which had been rejected.