Legal Opinion

Dornan v. Keefer

U.S. Circuit Court for the District of Eastern Pennsylvania

Decided January 29, 1892PublishedCited by 2 opinions

Motion to compel a patentee called as witness to answer interrogatories. Interference proceedings in United States patent-office between T. B. Doman and William B. Keefer, the latter being the patentee of letters patent No. 443,0-95 for ingrain carpet fabric. Keefer had declined to describe other than by reference to his patent the method of weaving employed to produce a fabric offered in evidence as part of the proof of date of Keefer’s invention.

1Opinion of the Court

Butler, District Judge.

The court’s jurisdiction is admitted by counsel; and that subject need not therefore be considered. The witness declines to answer on the ground that the questions propounded are-nqt proper cross-examination, are irrelevant tó the subject in controversy, and that they seek the disclosure of a secret discovery or invention — such as is protected by section 4908 of the Revised Statutes. Neither ground can be sustained. I need not discuss the subject. It is sufficient to say that the interrogatories seem to arise out of the examination in chief; and the information sought…

2Cited by2 opinions

  1. Dow Chemical Co. v. American Bromine Co.Michigan Supreme Court · 1920
  2. Carson Inv. Co. v. Anaconda Copper Mining Co.District Court, D. Montana · 1926

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