Pin/nip, Inc. v. Platte Chemical Company

304 F.3d 1235, 64 U.S.P.Q. 2d (BNA) 1344, 2002 U.S. App. LEXIS 18151, 2002 WL 2010431
CourtCourt of Appeals for the Federal Circuit
DecidedSeptember 4, 2002
Docket02-1056
StatusPublished
Cited by110 cases

This text of 304 F.3d 1235 (Pin/nip, Inc. v. Platte Chemical Company) is published on Counsel Stack Legal Research, covering Court of Appeals for the Federal Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Pin/nip, Inc. v. Platte Chemical Company, 304 F.3d 1235, 64 U.S.P.Q. 2d (BNA) 1344, 2002 U.S. App. LEXIS 18151, 2002 WL 2010431 (Fed. Cir. 2002).

Opinion

LOURIE, Circuit Judge.

PIN/NIP, Inc. appeals from the decision of the United States District Court for the District of Idaho granting summary judgment to Platte Chemical Company that claim 1 of Platte’s U.S. Patent 5,622,912 is not invalid under 35 U.S.C. § 102, PIN/ NIP, Inc. v. Platte Chem. Co., No. 97-0307, slip op. at 7 (D.Idaho Feb. 3, 1999) (“Summary Judgment”). PIN/NIP also appeals from the court’s denial of its motion for judgment as a matter of law, seeking to overturn a jury verdict that claim 1 is not invalid under 35 U.S.C. § 103, that PIN/NIP had infringed claims 1 and 33 of the ’912 patent, and that claim 33 satisfied the written description requirement of 35 U.S.C. § 112, ¶ 1, PIN/NIP, Inc. v. Platte Chem. Co., No. 97-0307, slip op. at 1 (D.Idaho Mar. 31, 2000) (“Judgment ”), as modified by PIN/NIP, Inc. v. Platte Chem. Co., No. 97-0307, slip op. at 1 *1238 (D.Idaho Mar. 5, 2001) (“Amended Judgment ”). For the reasons set forth below, we affirm-in-part, reverse-in-part, and vacate-in-part.

BACKGROUND

Platte is the assignee of the ’912 patent, which is directed to a composition and methods for inhibiting sprout growth on tubers, such as potatoes. Sprouting can cause tubers to exhibit undesirable texture and sugar levels, resulting in a less desirable food product. ’912 patent, col. 1, ll. 20-22, 30-33. One prior art substance that inhibits tuber sprout development is the synthetic chemical chlorpropham, also referred to as CIPC. Id. at ll. 35-52. The background section of the ’912 patent specification acknowledges that CIPC can be applied to tubers in storage using a known thermal fogging technique, whereby CIPC is heated or mixed with hot steam to create an aerosol, which is then circulated about the tubers. Id. Because the toxicity of CIPC is a matter of concern, people have sought natural substances for use as a tuber sprout suppressant. Id. at ll. 53-65. Known natural substances with sprout suppressing properties include dimethylna-phthalene (“DMN”) and diisopropylna-phthalene (“DIPN”). Id. at col. 2, ll. 4-12. These substances, however, do not exhibit a desirable level of long-term effectiveness. Id.

The invention of the ’912 patent served to inhibit sprout development on tubers by utilizing a combination of CIPC and a substituted naphthalene. In this way, the inventors hoped to be able, to utilize lower levels of CIPC, and thus minimize toxicity concerns, while achieving a long-term effectiveness that had not been possible with a substituted naphthalene alone. Id. at 11. 16-31. The patent specification describes experiments in which reduced amounts of CIPC along with either DMN or DIPN were applied via thermal fogging to stored potatoes, and their sprouts were then measured over time. Id. at col. 3, ll. 14-60. The experiments revealed that a combination of CIPC and either DMN or DIPN was significantly more effective in inhibiting sprout growth than one would have expected based on applications of the chemicals separately. Id. at ll. 9-10 (“[T]he effectiveness of the combination was quite unexpected.”); see also id. at col. 5, ll. 5-42 (analyzing the quantitative data from the experiments).

The application which issued as the ’912 patent was filed with three independent claims, including composition claim 1 and method claim 19, reading as follows:

1. A composition adapted for inhibiting sprout formation in tubers during storage, comprising:
CIPC (chlorpropham); and a substituted naphthalene.
19. A method of inhibiting sprout formation in tubers during storage, comprising the steps of:
providing a composition comprising CIPC and a substituted naphthalene to form a sprout inhibiting composition;
applying an effective amount of the sprout inhibiting composition to the outer surface of the tubers to form treated potatoes [sic]; and
storing the treated tubers.

Id. at col. 6, ll. 5-8, 55-64 (emphases added). In a preliminary amendment, the applicants added another independent claim, claim 33, also directed to a method, which reads as follows:

33. A method of inhibiting sprout formation on tubers during storage, comprising the steps of:
applying CIPC to the tubers in an amount effective to form a residue thereon and inhibit sprout formation therefrom;
*1239 applying a substituted naphthalene to the tubers in an amount effective to form a residue thereon and to inhibit sprout formation therefrom; and
storing the tubers for a period of time, wherein the CIPC and substituted naphthalene residues are both present for at least a portion of the period of time the tubers are stored.

Id. at col. 8, ll. 1-14. Claim 33 was added after the inventors learned that subsequent to their filing date PIN/NIP had publicly disclosed a method for treatment of potatoes for the purpose of sprout suppression, by which both CIPC and DMN were applied separately in spaced, sequential applications days to months apart. It is that activity for which Platte later accused PIN/NIP of infringing the ’912 patent.

The United States Patent and Trademark Office (“PTO”) allowed all claims in the application in the first Office Action. The examiner assigned to the application reasoned that it would have been prima facie obvious to one skilled in the art to have combined two known substances— CIPC and substituted naphthalene — each of which was taught by the prior art to suppress tuber sprout growth; however, the examiner concluded that the applicants had overcome the prima facie case by demonstrating unexpected results of the combination “greater than would be expected from the inhibition of each active agent alone.” Summary Judgment at 8 (quoting the patent examiner’s reasons for allowance).

PIN/NIP brought suit against Platte seeking a declaratory judgment of invalidity and noninfringement of the ’912 patent, as well as asserting claims of violations of the antitrust and unfair competition laws. Platte counterclaimed for patent infringement. After conducting a Markman hearing, the court construed the term “composition” to mean “two chemicals ... arranged ... even though the chemicals are never physically mixed,” including the situation “created by the spaced, sequential application of two chemicals applied days or months apart.” PIN/NIP, Inc. v. Platte Chem. Co., No. 97-0307, slip op. at 10 (D.Idaho Jan. 21, 1999) (“Markman Order”).

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304 F.3d 1235, 64 U.S.P.Q. 2d (BNA) 1344, 2002 U.S. App. LEXIS 18151, 2002 WL 2010431, Counsel Stack Legal Research, https://law.counselstack.com/opinion/pinnip-inc-v-platte-chemical-company-cafc-2002.