William is a litigator who co-chairs Pryor Cashman’s Art Law practice. He represents institutional and individual clients in a wide range of art authenticity, title and other matters. Bill also has extensive experience handling intellectual property litigation involving copyright, trademark, right of publicity, and defamation claims. He is a frequent speaker and writer on issues impacting the art world, such as authenticity disputes, World War II restitution cases, artist royalty rights, and procedural law issues.
Working in conjunction with the Netherlands Arbitration Institute (NAI) and the Authentication in Art (AiA) organization (where Bill serves as an Advisory Board member), he conceived of and formed a working group to design the newly-launched “Court of Arbitration for Art” (where he is now a board member), administered through NAI. Bill is also a founding board member of the Professional Advisors to the International Art Market (PAIAM) in New York.