Legal Opinion
Hartford National Bank & Trust Co. v. E. F. Drew & Co.
District Court, D. Delaware
Decided July 1, 1955No. Civ. A. No. 1470PublishedCited by 5 opinions
1Opinion of the Court
LEAHY, Chief Judge.
Plaintiff sues for infringement of patent No. 2,441,091 relating to an improved process for producing provitamin D31. Claims 12 and 24 are in issue. Defenses are prior art and lack of identity of defendant’s process. Plaintiff claims the two published prior art articles relied on by defendant do not disclose the inventive steps of the patent; and defendant’s only witness departed from the teachings of the two prior art articles when he said he produced the product envisaged by plaintiff’s patent process.
Infringement. The patent deals with a process for the synthesis of…
2Cases cited15 opinions
- Ric-Wil Co. v. E. B. Kaiser Co.Court of Appeals for the Seventh Circuit · 1950
- McGee v. MississippiSupreme Court of the United States · 1950
- Artcraft Silk Hosiery Mills, Inc. v. Gotham Silk Hosiery Co.Court of Appeals for the Third Circuit · 1934
- Ingersoll Milling MacH. Co. v. General Motors Corp.Court of Appeals for the Seventh Circuit · 1953
- Willis v. TownCourt of Appeals for the Eighth Circuit · 1950
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3Cited by5 opinions
- Corning Glass Works v. Anchor Hocking Glass Corp.District Court, D. Delaware · 1966
- Hartford National Bank & Trust Co. v. E. F. Drew & Co.District Court, D. Delaware · 1960
- Hartford National Bank & Trust Company, Trustee, and Philips Laboratories, Inc. v. E. F. Drew & Co., Inc.Court of Appeals for the Third Circuit · 1956
- S. W. Farree, Inc. v. Texas Instruments Inc.District Court, D. Delaware · 1964
- Nestle Co. v. CommissionerUnited States Tax Court · 1963