Freedman v. Friedman

142 F. Supp. 426, 110 U.S.P.Q. (BNA) 82, 1956 U.S. Dist. LEXIS 3130
CourtDistrict Court, D. Maryland
DecidedJune 20, 1956
DocketCiv. No. 7836
StatusPublished
Cited by2 cases

This text of 142 F. Supp. 426 (Freedman v. Friedman) is published on Counsel Stack Legal Research, covering District Court, D. Maryland primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Freedman v. Friedman, 142 F. Supp. 426, 110 U.S.P.Q. (BNA) 82, 1956 U.S. Dist. LEXIS 3130 (D. Md. 1956).

Opinion

R. DORSEY WATKINS, District Judge.

On February 28, 1939, United States Letters Patent No. 2,149,048 for artificial dental structures were issued to plaintiff. The patent relates to

“improvements in masticating apparatus and has for one of its objects to increase the retentiveness of an artificial denture with respect to the ridge of the mouth on which it is mounted, by utilizing a magnetic material in the structure in such a manner that opposed portions thereof, at least one of which contains said material, will act one upon the other to assist in the maintenance of said denture in its operative position.”

Seven figures in the drawing accompanying the patent represent “mechanical expressions” of the “inventive idea.” These range from complete upper and lower dentures with horseshoe magnets, through the field of removable bridgework, to magnetizable backings for opposite upper and lower molars. The description in the patent teaches that [427]*427"upon completion of the dentures”, the formation of which “may be accomplished by following any preferred technique well known in the art”, the “alloy in each of them is magnetized so that, for example, the posterior extremities will receive one polarity while the anterior portion thereof is of the opposite polarity.”

Claims 3 and 4, which are representative, read as follows:

“3. As a new article of manufacture, a pair of artificial dentures made, at least partially, of magnetized material opposed portions of which in the two dentures are of like polarity.
“4. As a new article of manufacture, a pair of artificial dentures, the plates of which are at least partially made of magnetized alloy, with the opposed posterior extremities of both plates of one polarity and the opposed anterior portions of said plates of another polarity.”

On November 8, 1954, plaintiff sued defendant, the complaint containing the usual jurisdictional allegations, and the further allegations that the patent was “duly and legally issued to plaintiff”, and that defendant had been and was infringing the patent by “making, selling and using artificial dental structures embodying the patented invention.” Defendant’s answer denied knowledge or information sufficient to form a belief as to the truth of the allegations of validity, and as to infringement, alleged:

“Defendant further alleges that he is without knowledge or information sufficient to form a belief as to the truth of the allegations contained in paragraph VI to the effect that he has been infringing the letters patent therein referred to; he further alleges that since March 31, 1954, and not prior thereto, he has made five separate purchases from the Magnet Sales Company, 3657 South Vermont Avenue, Los Angeles 7, California of ‘Magnetic Dentures’ the total amount paid therefor aggregating $71.25; that he further alleges that he has discontinued such purchases and will make none in the future; that the Defendant has no knowledge or information sufficient to form a belief as to whether or not his purchase and use of the items mentioned constituted an infringement of the letters patent of the Plaintiff.”

Plaintiff through Interrogatories and Requests for Admissions developed that defendant had offered for sale and/or sold “Magnetic Dentures” purchased from Magnet Sales Company; that the “Magnetic Dentures” “included”1 magnets specially designed to be employed in artificial dentures to provide such dentures with repelling action tending to force them apart and thus to assist in retaining the dentures in place; and that defendant had purchased twelve sets of magnets, at a total cost of $67.72, which he had resold to four named customers (together with two cash sales to unidentified purchasers) for a total of $109.05.

Defendant denied having installed any magnets in artificial dentures; denied knowledge as to the present location and ownership of any of the sets of magnets and whether any magnets were employed in artificial dentures; claimed innocent purchase of the magnets and that he had received no notice of the patent or of any alleged infringement before the institution of suit; and that he had offered to pay plaintiff the entire profits from such sales,2 to avoid the expense of litigation.

[428]*428At the trial plaintiff offered in evidence a certified copy of the letters patent,3 and copies of plaintiff’s Interrogatories and defendant’s Answers thereto, and copies of plaintiff’s Requests for Admissions and defendant’s Answers thereto. Defendant offered no evidence.

Plaintiff claims that defendant is liable as a contributory infringer under Section 271(c) of Title 35, United States Code, the relevant part of which reads as follows:

“Whoever sells a component of a * * * combination or composition, or a material * * * for use in practicing a patented process * * * knowing the same to be especially made or especially adapted for use in an infringement of such patent, and not a staple article or commodity of commerce suitable for substantial noninfringing use, shall be liable as a contributory infringer.”

United States Code, Title 35, Sec. 282, provides that:

“A patent shall be presumed valid. The burden of establishing invalidity of a patent shall rest on a party asserting it.”

Defendant did not directly assert invalidity, but merely denied knowledge or information sufficient to form a belief as to the truth of the allegation of validity. Nor did defendant plead any of the defenses enumerated in Section 282, nor give the 30-day written notice therein required, nor request permission at the trial to present proof with respect thereto.

Solely for the foregoing reasons, the Court is constrained 4 to treat the patent in suit as valid for the purposes of these proceedings.

Several questions are presented for decision :

1. Would an artificial denture incorporating the magnets sold by defendant infringe plaintiff’s patent?

Plaintiff, in his patent application, stated:

“In carrying out the invention, it is proposed to employ, as the magnetizable material used in the manufacture of the dental structure, an alloy consisting of aluminum, nickel, cobalt and iron, such as described in United States Patents Nos. 1,-947,274, dated February 13, 1934; 1,968,569, dated July 31, 1934; and 1,989,551, dated January 29, 1935. This alloy is especially suitable for the purpose intended, primarily because of its exceedingly high point of magnetic saturation, the ability to retain its magnetism, and its capability of being used in smaller volume than any other known magnet material; also, the fact that the alloy is non-corrosive lends itself admirably for use in a dental structure.”

Except as to dental bridgework, it is stated that the backing of the upper and lower dentures “is formed of the magnetizable alloy above mentioned, although [429]*429it will be appreciated that one of the backings could be of such metal and the other of some other magnetizable material.” (Emphasis supplied.)

Further, in the patent application, it is stated that “Upon completion of the dentures, the alloy in them is magnetized * * * ”

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Freedman v. Overseas Scientific Corp.
150 F. Supp. 394 (S.D. New York, 1956)

Cite This Page — Counsel Stack

Bluebook (online)
142 F. Supp. 426, 110 U.S.P.Q. (BNA) 82, 1956 U.S. Dist. LEXIS 3130, Counsel Stack Legal Research, https://law.counselstack.com/opinion/freedman-v-friedman-mdd-1956.