Greenberg v. Croydon Plastics Co., Inc.

378 F. Supp. 806, 182 U.S.P.Q. (BNA) 673
CourtDistrict Court, E.D. Pennsylvania
DecidedJune 27, 1974
DocketCiv. A. 72-832
StatusPublished
Cited by51 cases

This text of 378 F. Supp. 806 (Greenberg v. Croydon Plastics Co., Inc.) is published on Counsel Stack Legal Research, covering District Court, E.D. Pennsylvania primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Greenberg v. Croydon Plastics Co., Inc., 378 F. Supp. 806, 182 U.S.P.Q. (BNA) 673 (E.D. Pa. 1974).

Opinion

OPINION

JOSEPH S. LORD, III, Chief Judge.

This is in part a suit for infringement of United States Letters Patent No. 3,411,501 (“Greenberg ’501”), of which plaintiff Greenberg, a citizen of Pennsylvania, is the owner and Right-Gard Corporation (“Right-Gard”), a Pennsylvania corporation, the exclusive licensee. Plaintiffs also complain of trade secret misappropriation and misuse, conspiracy to infringe the patent and to misappropriate trade secrets, inducement to infringe the patent in suit, unfair competition and trade libel. We have jurisdiction under 28 U.S.C. § 1338(a) and (b). We denied plaintiffs’ motion for a preliminary injunction and ultimately had a non-jury trial on these issues.

I. Factual Background

In order to place plaintiffs’ contentions in perspective, it is necessary to present a brief overview of the facts of *808 the case. Further findings of fact will be made as we reach the merits of each of their claims.

The patent in suit describes a mouth-guard made of thermoplastic material which is to be worn by athletes for the protection of their teeth during sporting events. Right-Gard Corporation, a small company of which plaintiff Greenberg is the president, has been manufacturing flavored and unflavored versions of this mouthguard. For five years, until November 1971, defendant Dobrowolski was employed by Right-Gard and managed its sales operations. In the course of his employment, Dobrowolski became thoroughly familiar with every phase of Right-Gard’s business, including the technical aspects of mouthguard manufacturing. Dobrowolski left Right-Gard in November 1971 to become the east coast, sales representative for Safe-Play Manufacturing Co., Inc. (“Safe-Play”), a Nebraska corporation which had sold athletic equipment such as pennants and line markers but which, until Dobrowolski’s arrival, had never been in the mouthguard business.

About two weeks after he started working for Safe-Play, Dobrowolski and the president of Safe-Play discussed the possibility of manufacturing mouth-guards. Dobrowolski contacted Croydon Plastics Co., Inc. (“Croydon”), a Pennsylvania corporation, which had at one time molded mouthguards on a subcontracting basis for Right-Gard, and asked Croydon president Eugene Grzesnikowski for a quotation on the cost of tooling and molding mouthguards. Croydon quoted a price and ultimately manufactured and delivered to Safe-Play the mouthguards which are alleged to infringe the patent in suit. Safe-Play advertised, marketed and distributed these mouthguards under the name Power Cushion Models 800, 801, 802 and 803, with and without flavoring. Plaintiffs then instituted this lawsuit seeking a preliminary injunction, which we denied, and permanent injunctive relief and damages.

II. Patent Cause of Action

Claim 9 of the Greenberg ’501 patent, which plaintiffs allege has been infringed by defendants’ mouthguards, describes the mouthguard as follows:

“A preformed saddle for use in making a mouthpiece comprised of a substantially U-shaped member of channel cross-section including an outer flange, a lingual flange and a web joining them and made of a plastic such that at a predetermined temperature range below that of boiling water the saddle will retain its essential shape but will be soft enough to take teeth impressions and to retain the teeth impressions below the softening range, the web having a mean thickness exceeding that of the outer and lingual flanges so that when the inner surface of the web contains the impressions of one set of teeth and the outer surface of the web contains impressions of the bite surface of the opposite set of teeth, a thickness of material is present in the web between impressions to protect both sets of teeth.”

Defendants assert as a defense to the infringement claim that Claim 9 of the Greenberg patent is invalid and that even if it is valid, the Safe-Play mouthguards do not infringe. We have concluded that the subject matter of Claim 9 would have been obvious at the time of invention to a person of ordinary skill in the art of, making mouth-guards and therefore that Claim 9 of the patent in suit is invalid under 35 U.S.C. § 103. Because of this conclusion we find it unnecessary to reach the question of infringement, nor need we pass on the other grounds defendants have asserted in support of their defense of invalidity. 1

Congress has prescribed a three-pronged test for patentability: novelty, *809 utility and nonobviousness. The test of obviousness is contained in § 103 of the Patent Act of 1952, 35 U.S.C. § 103, which provides in relevant part:

“A patent may not be obtained * * * if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains.”

The criteria for determining obviousness or nonobviousness under § 103 were set out by the Supreme Court in Graham v. John Deere Co., 383 U.S. 1, 17-18, 86 S. Ct. 684, 694, 15 L.Ed.2d 545 (1966):

“Under § 103, the scope and content of the prior art are to be determined; differences between the prior art and the claims at issue are to be ascertained ; and the level of ordinary skill in the pertinent art resolved. * * * Such secondary considerations as commercial success, long felt but unsolved needs, failure of others, etc., might be utilized to give light to the circumstances surrounding the origin of the subject matter sought to be patented. As indicia of obviousness or nonobviousness, these inquiries may have relevancy.”

The prior art at the time of Mr. Greenberg’s invention was such that Claim 9 must be held invalid for obviousness. An examination of two prior mouthguard patents, Grossberg Patent No. 3,211,143 and Cathcart et al. Patent No. 2,966,908, makes this conclusion unavoidable, especially in light of plaintiff’s own testimony at trial. 2

Grossberg teaches a mouthguard with a U-shaped member of channel cross-section, an outer flange, a lingual flange and a web joining them. It is made of a thermoplastic material which can be softened at a molding temperature of between 120° and 160° Fahrenheit. The only discernible difference between Claim 9 of the patent in suit and Gross-berg, and the only difference plaintiff himself was able to point to at trial, is that the Greenberg mouthguard has a web thick enough to take impressions of one set of teeth and of the bite surface of the other set, while the web described in Grossberg will only take impressions of one set of teeth.

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Cite This Page — Counsel Stack

Bluebook (online)
378 F. Supp. 806, 182 U.S.P.Q. (BNA) 673, Counsel Stack Legal Research, https://law.counselstack.com/opinion/greenberg-v-croydon-plastics-co-inc-paed-1974.