Legal Opinion

Schulenburg v. Signatrol, Inc.

Illinois Supreme Court

Decided September 28, 1965No. 38849PublishedCited by 80 opinions

1Opinion of the CourtJustice Solfisburg

This case involves the questions of trade secrets, unfair competition and injunctive relief. Plaintiff E-S Industries, Inc., successor to Time-O-Matic, manufactured and sold certain devices commonly called flashers and used primarily in the sign industry to cause lights to flash in such a manner as to animate the sign in various patterns or designs. The individual defendants were all former employees of said plaintiff who left to form their own competing company to manufacture and sell flashers. Plaintiffs filed suit against the defendants charging unfair competition by violation of a trade…

2Cases cited6 opinions

  1. Sears, Roebuck & Co. v. Stiffel Co.Supreme Court of the United States · 1964
  2. Compco Corp. v. Day-Brite Lighting, Inc.Supreme Court of the United States · 1964
  3. Smith v. Dravo Corp.Court of Appeals for the Seventh Circuit · 1953
  4. Victor Chemical Works v. IliffIllinois Supreme Court · 1921
  5. Servo Corporation of America, and Cross-Appellant v. General Electric Company, and Cross-AppelleeCourt of Appeals for the Fourth Circuit · 1964

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3Cited by80 opinions

  1. ILG Industries, Inc. v. ScottIllinois Supreme Court · 1971
  2. House of Vision, Inc. v. HiyaneIllinois Supreme Court · 1967
  3. National Rejectors, Inc. v. TriemanSupreme Court of Missouri · 1966
  4. The A. H. Emery Company v. Marcan Products Corporation, Marshall Control Products Corp., Hugh A. Mills, Ronald R. Marshall, and David E. GoldingCourt of Appeals for the Second Circuit · 1968
  5. Rockwell Graphic Systems, Incorporated v. Dev Industries, Incorporated Press MacHinery Corporation and Robert FleckCourt of Appeals for the Seventh Circuit · 1991

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