Kasper v. Cooper Canada Ltd.

688 F. Supp. 347, 7 U.S.P.Q. 2d (BNA) 1734, 1988 U.S. Dist. LEXIS 3841, 1988 WL 67295
District Court, N.D. Illinois·Decided April 21, 1988·No. 87 C 5633·Published·Cited by 2 cases

Opinion

MEMORANDUM OPINION AND ORDER

ASPEN, District Judge:

Plaintiff Michael Kasper (“Kasper”) brings this patent infringement and breach of contract action against defendant Cooper Canada Limited, Inc. (“Cooper”). Kasper is the assignee of a patent issued to his father, Dale Kasper, on a helmet and face protector apparatus commonly used in the sports of hockey and broomball (“Kasper patent”). In 1976, Margaret Kasper, thenassignee of the Kasper patent, filed suit against Cooper in federal court, charging among other things that Cooper’s Model CFG face protector apparatus infringed the Kasper patent. Margaret Elizabeth Kasper v. Cooper Canada Limited, No. 76 C 1917 (N.D.Ill.1976). The parties settled and entered into an agreement (“Settlement Agreement”) whereby Cooper paid Margaret Kasper a specified sum and dismissed the action. The Settlement Agreement contained other provisions, the interpretation of which are at issue in this action. As early as 1986, Cooper marketed a newer Model CFG7 face protector which Cooper represented in its catalog as the “same construction as CFG except made to fit” a different size helmet. Complaint, Exhibit D. Kasper alleges that Cooper resumed the production and sale of the Model CFG. Kasper then filed this action, charging patent infringement and breach of the *349 Settlement Agreement. Cooper moves for summary judgment as to both counts. For the reasons set forth herein, the motion is denied.

Subsequent to filing this action, Kasper learned that Cooper began to advertise and promote a new face protector, the Cooper “20-20,” and that Cooper represented to customers that it intended to ship these new protectors as early as May 1988. Kasper moves for leave to amend the complaint to add a count seeking a declaratory judgment that the “20-20” infringes the Kasper patent. This motion is allowed.

I

Summary Judgment

Summary judgment is appropriate when the moving party demonstrates that no genuine issue of material fact exists and that it is accordingly entitled to judgment as a matter of law. Fed.R.Civ.P. 56(c). The moving party bears the burden of establishing the absence of a triable fact issue. Celotex Corp. v. Catrett, 477 U.S. 317, 106 S.Ct. 2548, 2553, 91 L.Ed.2d 265 (1986). In evaluating a summary judgment motion, the court must read the facts in the light most favorable to the non-moving party. Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 106 S.Ct. 2505, 2513, 91 L.Ed.2d 202 (1986); Dale v. Chicago Tribune Co., 797 F.2d 458, 460 (7th Cir.1986), cert. denied, 479 U.S. 1066, 107 S.Ct. 954, 93 L.Ed.2d 1002 (1987). Thus, all factual inferences are made in favor of the non-moving party. Vachet v. Central Newspapers, Inc., 816 F.2d 313, 316 (7th Cir.1987). We find that genuine issues of material fact exist as to both counts.

A. Patent Infringement

As to Kasper’s patent infringement claim, Cooper contends that, under either a theory of direct infringement or equivalency infringement, the undisputed facts demonstrate that Cooper is entitled to judgment as a matter of law. Since we find the existence of unresolved issues of material fact as to whether Cooper’s Models CFG and CFG7 infringe the Kasper patent under the doctrine of equivalency, we deny the motion for summary judgment as to the patent infringement count without addressing direct infringement.

The doctrine of equivalency allows a patentee to recover for patent infringement even if the accused device does not literally infringe the language of the patent specification and claims. Specifically, a patentee may recover if the accused device “performs substantially the same function in substantially the same way to obtain the same result.” Graver Tank & Manufacturing Co. v. Linde Air Products Co., 339 U.S. 605, 608, 70 S.Ct. 854, 856, 94 L.Ed. 1097, reh’g denied, 340 U.S. 845, 71 S.Ct. 12, 95 L.Ed. 620 (1950) (quoting Sanitary Refrigerator Co. v. Winters, 280 U.S. 30, 42, 50 S.Ct. 9, 13, 74 L.Ed. 147 (1929)); Wolens v. F.W. Woolworth Co., 703 F.2d 983 (7th Cir.1983).

In anticipation of Kasper claiming equivalency infringement, Cooper contends that the doctrine of prosecution history estoppel (or “file wrapper estoppel”) precludes such a claim. Under this doctrine, a patentee cannot maintain an equivalency claim when a design or operational characteristic of the accused device differs from an essential characteristic of the patented device, and the patentee argued the novelty and nonobviousness of that very characteristic during prosecution of the patent. Hughes Aircraft Co. v. United States, 717 F.2d 1351 (Fed.Cir.1983). A patentee is precluded from narrowing its patent application to distinguish it from the prior art and thereby obtain the patent, and then broaden the patent specification to include the accused device in a later infringement action. When, however, the narrowing claims and arguments made during prosecution of the patent are ambiguous or not explicit, the doctrine of prosecution history estoppel should be applied sparingly. Caddock v. Hy-Meg Corp., 668 F.Supp. 1179, 1181 (N.D.Ill.1987). We believe that such ambiguity is present here.

In applying the doctrine of prosecution history estoppel to Kasper’s patent infringement count, Cooper contends that in order to obtain the Kasper patent, Kasper narrowed its patent claim to exclude face *350 protectors that are ventilated by means of a gap between the face protector and the helmet (“gap-ventilated face protectors”). Since Cooper’s Models CFG and CFG7 are gap-ventilated face protectors, Cooper concludes, Kasper cannot now claim they infringe on the Kasper patent.

Reading those portions of the prosecution history to which Cooper directs our attention most favorably to Kasper, we conclude that the trier of fact could find that Kasper did not narrow its claim to exclude gap-ventilated face protectors such as Cooper’s. In a letter sent by Dale Kasper’s attorney to the Patent Examiner in the early stages of the patent prosecution, Kasper stated that while the protector’s

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Kasper v. Cooper Canada Ltd., 688 F. Supp. 347, 7 U.S.P.Q. 2d (BNA) 1734, 1988 U.S. Dist. LEXIS 3841, 1988 WL 67295 (N.D. Ill. 1988).

688 F. Supp. 347 (Kasper v. Cooper Canada Ltd.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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