Legal Opinion · Dissent

Lewis E. Walkup v. Harold G. Greig

Court of Customs and Patent Appeals

Decided June 11, 1964No. Patent Appeal 7053Published

1Dissent

SMITH, Judge, with whom RICH, Judge, joins

(dissenting).

The majority opinion seems to depart from the established legal principles regarding what is necessary for an inventor to prove in order to establish a reduction to practice. In the majority opinion this departure is somewhat obscured by and confused with the question of the burden of proof which must be met by a junior party. Here certain facts are well established by a clear preponderance of the evidence. The record establishes that during the period between August 25 and September 5, 1950, certain tests were run by Carlton under…

2Cases cited6 opinions

  1. Hildreth v. MastorasSupreme Court of the United States · 1921
  2. Arthur W. Schnick v. Lawrence E. FennCourt of Customs and Patent Appeals · 1960
  3. Mergenthaler Linotype Co. v. Press Pub. Co.U.S. Circuit Court for the District of Southern New York · 1893
  4. Tansel v. HigonnetCourt of Customs and Patent Appeals · 1954
  5. Leichsenring v. FeeemanCourt of Customs and Patent Appeals · 1939

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