RULING ON MOTION FOR SUMMARY JUDGMENT
In this suit for infringement of United States Patent No. 2,945,666 (“666”) relating to the manufacture of ball valves, defendant has moved for summary judgment on the three issues: laches, estoppel and prejudgment interest.
*1497 Facts
The patent was issued to plaintiff on July 19, 1960. Since 1962, plaintiff has conducted a series of suits to enforce its patent rights. The first was brought against Pacific Valves, Inc. on February 9, 1962, in New Jersey. On July 10, 1963, plaintiff sued the United States in the Court of Claims, listing defendant’s predecessor in interest, UTD Corporation, Contromatics Division (“Contromatics”), and nine other corporations as manufacturers violating plaintiff’s patent and with whom the United States did business. On April 28, 1965, the Pacific Valves’ suit was settled and dismissed.
On May 18, 1965, plaintiff filed suit against Worcester Valve in the District Court of Massachusetts and against Lunkenheimer Company in the Southern District of Ohio on June 2, 1965. Worcester Valve had been named as an infringer in the Court of Claims action. On May 16, 1967, a preliminary decision was entered by the Court of Claims finding the patent valid and infringed by the United States’ purchases of Worcester Valve and Electric Boat Division valves. On October 30, 1970, plaintiff filed a declaratory judgment action against Kitumora Valve Mfg. Company in the Southern District of Texas.
The United States Court of Appeals for the First Circuit held in May of 1971 that Jamesbury, not E.W. Bliss Company (an intervenor in the District of Massachusetts litigation) was the rightful owner of patent 666.
Jamesbury Corp. v. Worcester Valve Co.,
When plaintiff supposedly became aware of the manufacture of ball valves allegedly infringing on plaintiff’s patent by Contromatics, it contacted Contromatics on October 12, 1967, alleging infringement and offering to negotiate a settlement. On November 17, 1967, Howard Freeman, President of Jamesbury Corp., informed Contromatics that Jamesbury was then suing the United States to establish the validity of its patent. The parties met on December 14, 1967, but did not resolve their dispute. On January 5, 1968, Freeman wrote to Contromatics saying that the matter had been referred to its attorneys for consideration. Contromatics received no further communication from Jamesbury until the filing of the instant lawsuit.
The suit against Litton Industries was commenced in this court in February 1976. Defendant moved for dismissal on the grounds of laches and equitable estoppel. Judge Blumenfeld, treating the motion as one for summary judgment pursuant to Fed.R.Civ.P. 56, denied the motion because there were questions of fact in dispute.
Jamesbury Corp. v. Litton Indust. Products, Inc.,
Defendant later moved for summary judgment on the ground of plaintiff’s over-claiming. Judge Blumenfeld granted the motion,
Jamesbury Corp. v. Litton Indust. Products, Inc.,
Discussion
I. Law of the Case
Plaintiff contends that the law of the case was established by the denial of de
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fendant’s motion for a directed verdict at trial and the denial of defendant’s original motion for summary judgment.
A directed verdict, Fed.R.Civ.P. 50(a), is appropriate: (1) where there is no proof on an issue material to the cause of action; and (2) where there are no disputed issues upon which reasonable men could differ. 5A, J. Moore,
Moore’s Federal Practice,
1150.02 (1984). Caution is the rule with motions for directed verdicts. It “is in the best interests of efficient judicial administration for the trial judge to refrain from considering a motion for a directed verdict in favor of deciding a motion for judgment n.o.v.”
Mattivi v. South African Marine Corp.,
Similarly, the decision on defendant’s original motion for summary judgment is not conclusive.
[0]n a renewed motion for summary judgment before a second judge, the district court must balance the need for finality against the forcefulness of any new evidence and the demands of justice. With respect to a non-appealable denial of summary judgment, the law of the case is not a limit on the court’s jurisdiction, but a rule or practice which may be departed from in the sound discretion of the district court.
Corporacion de Mercadeo Agricola v. Mellon Bank Int’l,
II. Laches
Defendant first argues that plaintiff’s unreasonable delay in prosecuting this case entitles defendant to judgment on the basis of laches. Laches does not bar a patent action; rather, it bars pre-filing damages.
Leinoff v. Louis Milona & Sons,
A patentee’s involvement in other enforcement litigation may constitute a reasonable excuse for his failure to prosecute his patent against alleged infringers.
A.C. Aukerman Co. v. Miller Formless Co.,
The laches defense in a patent infringement case requires the court to balance the equities.
It is seemingly unjust that any one should be allowed to infringe a valid patent and deprive its owner of royalty to which the patent entitles him. On the other hand, it is inequitable for a person to sleep on his rights for years and lead another to think that the latter is safe in following counsel’s advice that he may manufacture a proposed device with impunity, and then, when he has made extensive investments and built up a prosperous business, penalize him and innocent investors for doing what might have been averted by timely action.
Rome Grader & Machinery Corp. v. J.D. Adams Mfg. Co.,
The original motion was decided on the following facts:
1. On October 12, 1967, plaintiff alleged that defendant’s predecessor in interest, Contromatics, was violating plaintiff’s patent and offered to. negotiate a license.
2. On November 17, 1967, plaintiff’s president, Mr. Freeman, wrote to defendant to inform it that plaintiff “was then suing the United States in the Court of Claims to establish the validity and infringement of its patent.”
3. On December 14, 1967, the parties discussed the patent issue without resolution. It was at this meeting that plaintiff apparently informed defendant that, as a supplier to the United States, defendant’s ball valve also might be in issue in the Court of Claims.
4. On January 5, 1968, Freeman wrote back to defendant informing them that: “We have reported your position to our attorneys and the subject is under careful consideration.”
See
Defendant now raises the following as undisputed facts, resulting from the subsequent proceedings herein:
(a) No later than July of 1963, “James-bury became aware that Contromatics manufactured a ball valve that possibly infringed the patent-in-suit.” Plaintiff’s response to Discovery Request 19.
(b) Jamesbury amended its complaint in the Court of Claims case to identify Contromatics, along with nine other manufacturers, as infringers with whom the United States had done business. Plaintiff’s response to Discovery Requests 17, 18; Jamesbury Admissions Nos. 22, 23.
(c) Worcester Valve, defendant in the 1965 Massachusetts infringement suit, was named as an infringer in the amended Court of Claims complaint.
(d) Since the initiation of the Court of Claims case, other alleged infringers have been individually sued, the last of which was filed in 1970. Jamesbury Admissions Nos. 24, 25 and 29. See defendant’s brief at 13-15.
Defendant’s argument that, because plaintiff has either sued or settled with other alleged infringers, it never had any intention of suing defendant must be
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rejected for the very grounds for which the “litigation excuse” exists — “the high cost of patent litigation and the comparatively moderate amounts recoverable” justifies piecemeal suit of a number of cases.
Leinoff,
While plaintiff’s activities between 1965 and 1976 may have been justified on the basis of its reliance on the “litigation excuse,” they do not resolve plaintiff's obligation of notice to defendant. As Judge Blumenfeld noted in his denial of the first motion for summary judgment, the critical issue is the manifestation of the patentee’s intent with regard to the defendant. The new facts cast serious doubt on plaintiff’s assertion that it provided defendant with adequate notice. Plaintiff knew Contromatics was allegedly violating its patent in 1963, more than four years before it contacted defendant in 1967. Indeed, Contromatics was listed in the Court of Claims case, commenced July 10, 1963, as a manufacturer of the ball valves alleged to have violated plaintiffs patent and purchased by the United States. Interestingly, Judge Blumenfeld raised the pre-1967 notice issue as a concern in his decision on defendant’s earlier motion.
The second prong of laches is proof of material prejudice to defendant resulting from the patentee’s delay in asserting his claim.
Leinoff,
Defendant’s motion for summary judgment on the ground of laches is grant *1501 ed. Plaintiff may not recover damages occurring prior to the filing of its complaint.
III. Equitable Estoppel
Defendant’s second argument is that plaintiff’s behavior equitably estops the prosecution of this case. Unlike laches, equitable estoppel is a complete bar to a plaintiff’s suit. Equitable estoppel requires proof of four elements: “(1) an unreasonable and unexcused delay ... (2) prejudice to the defendant ... (3) affirmative conduct by the patentee inducing the belief that it had abandoned its claims against the alleged infringer; and (4) detrimental reliance by the infringer.”
A.C. Aukerman Co.,
Mere lapse of time, without more, is not sufficient to ground a defense to estoppel ..., but notice from a patentee to the defendant that infringement has occurred, accompanied by a threat of enforcement, and followed by an extended period of nonenforcement, is affirmative conduct from which an alleged infringer could reasonably infer that the claim against it had been abandoned.
A.C. Aukerman Co.,
The final element necessary for equitable estoppel is detrimental reliance by defendant on plaintiff’s activity. Plaintiff, in response to defendant’s original motion for summary judgment, argued that it was a question of material fact whether defendant relied on its claim of non-infringement or on the belief that the absence of an active pursuit of plaintiff’s rights meant it had abandoned its claim.
Jamesbury,
The decision on laches and equitable estoppel makes it unnecessary to reach the claim prejudgment interest.
Defendant’s motion for summary judgment on the issues of laches and equitable estoppel is granted.
SO ORDERED.
Notes
. While 35 U.S.C. § 286 (1986) technically only limits the amount of damages one may recover to that amount incurred within six years of the filing of the complaint, this statute has universally been viewed as the basis for determining that the proper equitable statute of limitations in a patent case is six years.
Leinoff,
. While not directly discussing the issue, the Federal Circuit Court of Appeals noted that the “litigation excuse” may provide a reasonable justification for rebutting the presumption of unreasonable delay provided the "infringers understood there was no intent to condone their infringements.”
Leinoff,
. Plaintiff claims that defendant cannot satisfy this element because Litton was not aware of the 1967 communications between plaintiff and Contromatics when Litton acquired Contromatics. Plaintiff’s argument is inherently inconsistent. If Litton is not deemed privy to the 1967-68 meeting and correspondence between James-bury and Contromatics then it is clear that Litton was never notified of the possible patent infringement over the course of nine years. Under such circumstances, both the laches and equitable estoppel defenses would prevent plaintiff from now trying to reap the profits of defendant's established business as the successor in interest to Contromatics. The better argument is that Litton stepped into the shoes of Contromatics and is liable for any knowledge that may be imputed to that firm, but also is entitled to rely on the absence of communication both to Contromatics and to it, especially in view of the fact that apparently Contromatics, along with its employees, was actually subsumed into Litton with little change other than the name on its business cards.
. Indeed, the facts of this case mirror closely the facts of
Naxon,
