Grubhub, which declined comment on Monday, filed a motion last week to send the case to arbitration. In court filings, the Chicago-based company has said it did not act deceptively nor breach its contracts with the two Tiffin eateries named as plaintiffs. The two restaurants, located in Elkins Park and Mount Airy, are part of a chain of 10 Tiffin eateries in the region.