A federal judge has ruled that DLA Piper can continue representing a plaintiff in a patent infringement dispute even though the firm also counsels the defendant's parent company, in a case that could have implications for Big Law when it comes to identifying and disclosing conflicts of interest.

In an October 23 decision, U.S. District Judge Maryellen Noreika, of the District of Delaware, agreed with a report by a special master that recommended denying a defense motion to disqualify DLA Piper as plaintiffs' counsel. But the judge also admonished DLA Piper for its "far from exemplary conduct" in handling the matter.