Peter Spaeth's practice focuses on securities and antitrust matters, and in particular, representing corporations and their officers and directors in securities fraud class actions and shareholder derivative suits, and representing corporations in antitrust litigation and government investigations and advising them with respect to transactional issues. He also represents clients in a variety of other complex commercial litigation matters.

Mr. Spaeth's clients have included aai Pharma, Inc.; Advanced Switching Communications; American Tower Corporation; Analog Devices, Inc.; Apria Healthcare Group, Inc.; Avid; BASF, A.G.; Blinds-to-Go, Inc.; City of South Bend, Indiana; Dragon Systems, Inc.; Eclipsys Corporation; Honda North America, Inc.; IDEXX Laboratories, Inc.; John Hancock Life Insurance Co.; National Grid U.S.A.; National Life of Vermont; New England Electric System; Newton-Wellesley Hospital; Northern Telecom; Ocean Spray Cranberries, Inc.; Open Software Foundation; PictureTel Corporation; PLC Medical Systems, Inc.; Prime Computer, Inc.; Primus Telecommunications Group, Inc.; Schottenstein Stores Corporation; Sepracor, Inc.; Sequoia Systems, Inc.; Sonus Networks; Stratus Computer, Inc.; Thermo Electron Corporation; Transkaryotic Therapies, Inc. and Triton.