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PFAFF v. WELLS ELECTRONICS, INC.

No. 97-1130.

525 U.S. 55 (1998)

PFAFF v. WELLS ELECTRONICS, INC.

United States Supreme Court.

Decided November 10, 1998.

Attorney(s) appearing for the Case

Jerry R. Selinger argued the cause for petitioner. With him on the briefs were Susan E. Powley and Jack A. Kanz.

C. Randall Bain argued the cause for respondent. With him on the brief were Alan H. Blankenheimer, Patricia A. Hubbard, C. Mark Kittredge, and James D. Hall.

Jeffrey P. Minear argued the cause for the United States as amicus curiae urging affirmance. With him on the brief were Solicitor General Waxman, Assistant Attorneys General Hunger and Klein, Deputy Solicitor General Wallace, William Kanter, Alfred Mollin, David Siedman, Mark S. Popofsky, Nancy J. Linck, and Albin F. Drost.*

Stevens, J., delivered the opinion for a unanimous Court.

Justice Stevens, delivered the opinion of the Court.

Section 102(b) of the Patent Act of 1952 provides that no person is entitled to patent an "invention" that has been "on sale" more than one year before filing a patent application.1 We granted certiorari to determine whether the commercial marketing of a newly invented product may mark the beginning of the 1-year period even though the invention...

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