Partnership law expert Leslie Corwin is being sued by an attorney he represented who claims Mr. Corwin mishandled an arbitration with the attorney’s former firm.

Allen Roberts, a partner at Epstein Becker & Green, sued Mr. Corwin and his firm, Greenberg Traurig, in October, claiming they were negligent in failing to prove liability against Mr. Roberts’ former partners at New York employment boutique Roberts & Finger. Mr. Roberts is seeking more than $6.6 million in damages (See the Complaint).