A proposed state-law class action has been filed against Discover Bank and several Pennsylvania-based debt collection law firms alleging that the credit card lender has been collecting on debts that the lender no longer had a beneficial interest in.

Philadelphia residents James H. Martin, Sean P. Stevens and Jesse William Banks III have filed a lawsuit against Discover Bank, DFS Services LLC and DB Servicing Corp., as well as law firms Stock & Grimes in Jenkintown, Pa., Solomon Law Group in Lafayette Hill, Pa., Weltman, Weinberg & Reis Co. in Philadelphia and Apothaker & Associates in Mount Laurel, N.J.