High Frequency Products, Inc. v. Wynn's Climate Systems, Inc.

91 F.3d 167, 1996 U.S. App. LEXIS 37106, 1996 WL 217840
Court of Appeals for the Federal Circuit·Decided April 30, 1996·No. 95-1468·Unpublished·Cited by 4 cases

Opinion

91 F.3d 167

NOTICE: Federal Circuit Local Rule 47.6(b) states that opinions and orders which are designated as not citable as precedent shall not be employed or cited as precedent. This does not preclude assertion of issues of claim preclusion, issue preclusion, judicial estoppel, law of the case or the like based on a decision of the Court rendered in a nonprecedential opinion or order.
HIGH FREQUENCY PRODUCTS, INC., Plaintiff-Appellant,
v.
WYNN'S CLIMATE SYSTEMS, INC., Defendant-Appellee.

95-1468.

United States Court of Appeals, Federal Circuit.

April 30, 1996.

Before MAYER, MICHEL, and BRYSON, Circuit Judges.

DECISION

BRYSON, Circuit Judge.

High Frequency Products, Inc., (HFPI) appeals from a summary judgment entered against it by the United States District Court for the Southern District of Florida. That court held that defendant Wynn's Climate Systems, Inc., (Wynn's) is not liable for infringe ment of HFPI's patent and is not liable for patent mismarking. We affirm.

BACKGROUND

HFPI is the owner of U.S. Patent No. 4,903,499, which relates to a system for refrigerant recovery and recycling in air conditioning devices. In 1990, HFPI granted a license to Wynn's to manufacture and sell products covered by the patent in exchange for royalty payments. The license agreement required Wynn's to mark the products with HFPI's patent number.

In 1993, Wynn's stopped selling products covered by the HFPI patent, and instead began selling newly designed products that HFPI admits are not within the scope of the patent's claims. The label on the back of Wynn's new devices, however, bore the number of HFPI's patent along with two other patent numbers and a statement that "other American and foreign patents" were pending. When HFPI alerted Wynn's that the new devices were marked with HFPI's patent number, Wynn's removed that number from its products.

HFPI filed suit against Wynn's alleging, inter alia, patent infringement and patent mismarking, see 35 U.S.C. §§ 271, 292. After discovery, the district court denied HFPI's motion for summary judgment and granted Wynn's cross-motion. On the issue of patent mismarking, the court held that HFPI was required to prove that Wynn's intended to deceive the public and that HFPI had not proffered any evidence of the necessary intent. On the issue of infringement, the court first noted that there was no actual infringement, as it was undisputed that the patent claims did not read on the accused device. The court then rejected HFPI's argument that the equitable doctrine of patent marking estoppel prevented Wynn's from denying that its products infringed HFPI's patent. The district court based its conclusion on the proposition that the marking estoppel doctrine is no longer viable, but it added that in any event the doctrine is inapplicable "[a]bsent inequitable conduct and detrimental reliance."

DISCUSSION

HFPI first challenges the district court's refusal to apply the equitable doctrine of patent marking estoppel. The doctrine of marking estoppel provides that a party that marks its product with a patent number may be estopped from claiming in an infringement suit that the product is not covered by the patent. See Boyd v. Schildkraut Giftware Corp., 936 F.2d 76, 79, 19 USPQ2d 1223, 1225 (2d Cir.), cert. denied, 502 U.S. 941 (1991); Keller v. Clark Equip. Co., 210 USPQ 742, 757-59 (D.N.D.1981), aff'd, 715 F.2d 1280, 219 USPQ 585 (8th Cir.1983), cert. denied, 464 U.S. 1044 (1984); Crane Co. v. Aeroquip Corp., 364 F.Supp. 547, 560, 179 USPQ 596, 606 (N.D.Ill.1973), aff'd in part, rev'd in part, 504 F.2d 1086, 183 USPQ 577 (7th Cir.1974).

The district court noted that the current state of the doctrine of marking estoppel is unclear, as this court has yet to endorse or reject the doctrine. After reviewing the cases applying the doctrine over the years, however, the district court determined that the doctrine is no longer viable.

It is not necessary to decide whether the doctrine of marking estoppel is still viable. Instead, we are satisfied that, regardless of its vitality as a general matter, the doctrine is inapplicable under the circumstances of this case.

In arguing for the application of the doctrine of marking estoppel here, HFPI relies most heavily on the decisions in Crane and Boyd. In Crane, the district court found that there was no literal infringement but held that marking estoppel applied. The Seventh Circuit, however, reversed the district court on the issue of literal infringement and thus affirmed the judgment on a ground other than marking estoppel. 504 F.2d at 1093, 183 USPQ at 581. In Boyd, the court found that marking estoppel was not appropriate where the mismarking was accidental and was corrected when noticed. The Boyd court explained:

We think that marking estoppel, like other varieties of estoppel, would arise only when a consideration of all aspects of a defendant's pertinent conduct makes it inequitable for him to take a position contrary to his prior statements or actions. The act of impermissibly placing a patent number on a product, if limited in time and quantity, does not inevitably have such adverse effects for the patentee or the consuming public as to bar the mismarker from establishing that his product does not use the patent.... [T]he accused mismarker should be able to defeat the claim by showing how inadvertent or limited the mismarking was. Of course, deliberate mismarking of even a limited nature or inadvertent mismarking over a prolonged period would justify an estoppel.

936 F.2d at 79, 19 USPQ2d at 1225.

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High Frequency Products, Inc. v. Wynn's Climate Systems, Inc., 91 F.3d 167, 1996 U.S. App. LEXIS 37106, 1996 WL 217840 (Fed. Cir. 1996).

91 F.3d 167 (High Frequency Products, Inc. v. Wynn's Climate Systems, Inc.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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