The Obama administration last week expanded its effort to improve the patent system and curb abusive legislation, but intellectual property lawyers said the initiative’s limited scope suggested that any major reforms must come from Congress.

White House officials on Feb. 20 announced that the U.S. Patent and Trademark Office would begin a pilot program within the next few weeks involving the use of glossaries in patent examinations. That could bring clarity to the abstract language that can sometimes drive patent litigation, particularly regarding software patents, the lawyers said.