Bepex Corporation, Cross-Appellee v. The Black Clawson Company, Cross-Appellant

713 F.2d 202, 220 U.S.P.Q. (BNA) 207, 1983 U.S. App. LEXIS 25300
CourtCourt of Appeals for the Sixth Circuit
DecidedAugust 1, 1983
Docket80-3673, 80-3686
StatusPublished
Cited by1 cases

This text of 713 F.2d 202 (Bepex Corporation, Cross-Appellee v. The Black Clawson Company, Cross-Appellant) is published on Counsel Stack Legal Research, covering Court of Appeals for the Sixth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Bepex Corporation, Cross-Appellee v. The Black Clawson Company, Cross-Appellant, 713 F.2d 202, 220 U.S.P.Q. (BNA) 207, 1983 U.S. App. LEXIS 25300 (6th Cir. 1983).

Opinion

GEORGE CLIFTON EDWARDS, Chief Judge.

In this appeal Bepex Corporation seeks to enforce Patent No. 3,447,450 for manufacture of a “cone press” known as the Wilhelm press. This record shows that the Wilhelm press was one of a number of presses designed with two rotating conical working faces, in which both such faces are mounted in juxtaposition to each other so that the press, when fed with certain materials, compresses those materials in a “pinch zone” at the narrow end of the wedge-shaped feeding zone. Among the uses for such presses are extracting juice from oranges and other fruits (Ingalls, Patent No. 2,617,354), crushing empty tin cans (Edwards, Patent No. 2,356,122), and dewatering paper pulp (Messing, Patent No. 2,793,-583 and No. 3,204,551).

These patents (and others) were issued before this patent controversy arose. With much prior art well known in the field, plaintiff Bepex’s predecessor, Rietz Manufacturing Company, was engaged in making and selling cone presses which proved to be relatively unsatisfactory. Consequently the Rietz Manufacturing Company hired one Donald Wilhelm to design a better press.

Subsequent to Wilhelm’s design, an application for a patent was made thereon and rejected. In the light of prior art, the Patent Office cited Ingalls, Bennett (Patent No. 2,789,618) and Messing as presses which anticipated the Wilhelm press and rejected the original two claims.

*203 Subsequently, Wilhelm submitted other claims the novel features of which may be summarized as follows:

(i) means serving pivotally to carry the rear end portions of the side structures on the frame;
(ii) each of the pair of opposed wheels journalled in the side structures includes an annular plate forming the outer side of the wheel;
(iii) thrust bearing means interposed between the outer margins of said annular plates and said side structures.

Based upon the new claims, the Patent Office issued the Wilhelm patent.

Defendant, The Black Clawson Company, purchased one of the Rietz presses and Bepex, the successor to Rietz, claimed copied, manufactured and began selling it. Black Clawson from the beginning asserted that all patentable features of the Wilhelm press were anticipated by the prior art, and that the Wilhelm patent was invalid because of such anticipation or because any novel features were obvious to one familiar with the art.

This case was tried before District Judge David Porter in Cincinnati without a jury. Judge Porter handed down a lengthy opinion holding that all of the claims in the patent were invalid.

The first issue in the case arises from the fact that the District Judge held that the first two claims of the Wilhelm patent were invalid on the doctrine of file wrapper estoppel. The second major issue could be phrased: Did the District Judge err in concluding that the subject matter of each of the claims of the Wilhelm patent was “obvious” to one skilled in the art? Appellant also raises other issues which we do not find it necessary to reach since we agree with the District Judge’s well reasoned opinion on the obviousness issue. On cross-appeal, Black Clawson contends primarily that the court committed error in refusing costs to Black Clawson as the prevailing party under Federal Rule of Civil Procedure 54(d).

We first affirm the District Court’s conclusion that the first two claims were barred from patentability by the doctrine of file wrapper estoppel. It is clear to us, as it was to the District Judge, that the first two claims of the patent in suit were the same two claims which appellant had withdrawn in the face of Patent Office objection. As to this issue we accept the District Judge’s analysis and reasoning. Certainly his finding on this score is not “clearly erroneous.” The other issues merit further discussion.

Our examination of the briefs and record of this case leads us to conclude that Bepex’s predecessor, Rietz through its engineer Wilhelm, improved on the prior art in at least two, possibly three, respects. It is clear that Wilhelm developed and improved the method of opening the press for clean-out and servicing. It is clear that Wilhelm developed a more effective sieve to remove fluid from the press. It is clear also that Rietz developed a more effective chain and sprocket drive system for the two wheels. The result of these improvements is that the press was indeed a better press, as a number of Black Clawson’s witnesses testified.

If the patentability of the claimed features of the Wilhelm press (other than those barred by estoppel) depended solely upon proofs of novelty and utility, we should indeed reverse Judge Porter. As indicated above, this record is replete with proofs that Wilhelm was hired to make and that he made a number of improvements in the original Rietz (P & L) cone press. But before Wilhelm’s work began in 1965, patents had been issued for cone presses for many purposes — among others: extracting juice from fruits; pressing water from paper pulp; and crushing cans. The use of cone presses for many purposes was old in the art when Wilhelm was hired.

As Judge Porter pointed out:

“The patents relied on by Black Claw-son to invalidate the Wilhelm patent include the following:
Ingals U.S. 2,617,354 1952
Bennett U.S. 2,789,618 1957
Messing U.S. 3,105,434 1963
Edwards U.S. 2,356,122 1944
Thomson U.S. 2,872,256 1959
*204 Messing U.S. 3,204,551 * 1965
Silver et al. U.S. 3,431,839 1969
Asplund G.B. ** 897,024 1962
Grandjean French 998,607 1944
Paragraph (73), Stipulation of Uncontested Facts. Of these references, only In-galls, Bennett, and Messing ’434 were cited by the Patent Office Examiner. Ibid."

Most patent appeals in the United States Courts turn on the question, “Do the patent claims disclose a development which was not obvious to a person skilled in the art?” So does this appeal.

35 U.S.C. § 103 (1976) provides:

A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, 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.

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Bluebook (online)
713 F.2d 202, 220 U.S.P.Q. (BNA) 207, 1983 U.S. App. LEXIS 25300, Counsel Stack Legal Research, https://law.counselstack.com/opinion/bepex-corporation-cross-appellee-v-the-black-clawson-company-ca6-1983.