Haavind Vislie moves up a tier in patent contentious work following a busy year. The Oslo firm is especially known for IT-related IP work, but has also been active on patent cases representing generic companies. "It has two very good people who are generally recognised, highly regarded and very clever patent litigators," says one peer about IP partners Helge Olav Bergan and Anne Marie Sejersted. In 2010, the pair acted in Kirka v Pfizer.