William F. Sondericker

William F. Sondericker

William F. Sondericker


2 Wall Street, New York, NY 10005
212-238-8656, Fax: 212-732-3232
sondericker@clm.comDownload Vcard

Practice Description

International transactions, licensing, distribution and pricing of products and services. Antitrust, unfair competition, intellectual property, products liability, employment, corporate M&A and partnership law.

Concentrates on representation of Japanese controlled enterprises engaged in business in the United States and on providing personal representation of business entities, shareholders, and individuals in business transactions, arbitrations and trials.


  • 1953 New York
  • 1965 U.S. Supreme Court
  • 1963 U.S. Court of Appeals, Second Circuit
  • 1976 U.S. Court of Appeals, Third Circuit
  • 1981 U.S. Court of Appeals, Fifth and Eleventh Circuits
  • 1982 U.S. Court of Appeals, Federal Circuit
  • 2008 U.S. Court of Appeals, Eighth Circuit
  • 1962 U.S. District Courts, Southern and Eastern Districts of New York
  • 1966 U.S. Court of Claims
  • 1977 U.S. Court of International Trade
  • 1963 U.S. Tax Court
  • Admitted pro hac vice in various other courts, including in Illinois, New Jersey, Connecticut, New Hampshire, Rhode Island, Maine, California, Florida, Alabama, Mississippi, Pennsylvania, Delaware, Missouri, Wisconsin, and Texas.


  • American Arbitration Association (AAA Arbitrator since 1967 of international and domestic commercial arbitrations
  • Chair of AAA Commercial Rules prior Task Forces of (AAA Commercial Arbitration Practice Committee)
  • U.S. District Court, Southern District of New York (Mediator)
  • The Association of the Bar of the City of New York (former Chair, Committee on Arbitration and Dispute Resolution; former Chair, Subcommittee on Distribution and Customer Restrictions of Committee on Antitrust and Trade Regulation)
  • New York State Bar Association (Member, Antitrust, Business Law and Trial Lawyers Sections)
  • American Institute of Mining, Metallurgical and Petroleum Engineers
  • New York City Bar Association (Panelist on Gray Market Imports; Panelist on Antitrust Developments and Pricing of Products. Reports authored on Disclosure in Arbitration and on Antitrust and Restrictive Practices in Distribution of Products)
  • Montreal Bar Association (Panelist on International Arbitration Procedure)


  • B.S., 1948 New York University
  • LL.B., 1952 The Catholic University of America (Law Review)

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