This is аn appeal from the judgment of the United States District Court for the *954 Northern District of Ohio, Eastern Division (Lambros, J.), dismissing the petition of Goodyear Tire & Rubber Company (Goodyear) for a declaratory judgment on the validity, enforceability, and nоn-infringement of two patents issued to Releasomers, Inc. The trial judge granted summary judgment in favor of Releasomers, holding that the court did not have jurisdiction under 28 U.S.C. § 2201 because there was no actual case or controversy between the parties. We reverse and remand for further proceedings.
I.
The parties have been involved in two separate suits involving the relevant technology, which is directed to a tire cure bladder release agent and a rеlated method of use. The first suit, which Releasomers brought in an Ohio state court in June 1982, alleged misappropriation of certain trade secrets related to the tire cure bladder technique. Releasomers claimed damаges in excess of $18 million. The state trial court dismissed the action on its merits and granted Goodyear’s petition for summary judgment. Releasomers appealed, and the state court of appeals reversed and remanded the action for a trial on the merits. That state action is still pending.
While the state action was ongoing, Re-leasomers was issued two patents directed to essentially the same technology involved in the state trade secret litigation: U.S. Letters Patent No. 4,544,122 (’122 patent) and No. 4,547,544 (’544 patent). Appellant Goodyear subsequently initiated a suit, this one in federal District Court, seeking a declaratory judgment that Releasom-ers’ ’544 and ’122 patents were invalid, unenforceable, аnd noninfringed. The District Court dismissed the action, concluding that the District Court did not have jurisdiction to hear the case under 28 U.S.C. § 2201, the Declaratory Judgment Act, 1 and granted Releasomers’ motion for summary judgment. The District Court reasoned that “[t]here ha[d] neither been conduct nor a course of action of [sic: on] the part of the defendant Releasomers, merely discussion, indicating possibility of suit” and concluded that there was no “actual controversy” between the pаrties.
II.
The case comes to this court following grant of summary judgment in favor of Releasomers by the District Court. It was therefore incumbent on the District Court to construe all inferences in favor of Goodyear, the non-moving party.
United States v. Diebold, Inc.,
III.
It goes without saying that federa' courts do not sit to render advisory opinions. Thus, the Declaratory Judgment Act requires the existence of an actual case or controversy between the parties bеfore a federal court can constitutionally assume jurisdiction.
Aetna Life Ins. Co. v. Haworth,
The second part of the test is clearly met in this instance. It is uncontrovert-ed that Goodyear manufactures tires using a tire cure bladder process. As the Distriсt Court recognized, the pivotal issue turns on whether, looking at the totality of the circumstances, Releasomers’ activities were such that Goodyear was placed in reasonable apprehension of a suit for patent infringement.
See C.R. Bard, Inc. v. Schwartz,
The mere fact that the state court actiоn did not specifically involve the '122 and ’544 patents is immaterial in these circumstances. First, those patents did not issue until after the state trial judge had granted Goodyear’s motion for summary judgment, and thus the patents could not have been at issue in that litigation.
Cf. C.R. Bard v. Schwartz,
In concluding that there was no justicia-ble controversy between the parties, the District Court was evidently persuaded by an affidavit of Releasomers’ president, attesting that, as president, he had nevеr expressly authorized that a suit be brought against Goodyear for patent infringement. Nevertheless, we cannot read the Declaratory Judgment Act so narrowly as to require that a party actually be confronted with an
express
threat оf litigation to meet the requirements of an actual case or controversy. Such a requirement would utterly defeat the purpose of the Declaratory Judgment Act, which in patent cases is to provide the allegedly infringing party relief from uncertainty and delay regarding its legal rights.
See
Moore’s Federal Practice H 57.08[2] 1986. As this court recognized in
C.R. Bard v. Schwartz, supra,
a pat-entee's intentions “may change over time” and the mere fact that Releasomers’ president has not at this particular moment authorized a patent infringement action against Goodyear is not dispositive of its intentions for the future.
CONCLUSION
In considering all the facts in this case, construing all inferences in favor of Goodyear, as we are bound to do, we can come to no other conclusion than that the District Court erred, as a matter of law, in granting Releasomers summary judgment. From the underlying facts in this case, it is a compelled inference that Goodyear had an objective apprehension of an impending law suit in federal court for infringement of the ’122 and ’544 patents. 6 We hold, therefore, that the District Court did have jurisdiction to proceеd under the Declaratory Judgment Act, 7 reverse the judgment of *957 the District Court, and remand for further proceedings.
REVERSED AND REMANDED.
Notes
. 28 U.S.C. § 2201 provides in pertinent part:
In a case of actual controversy within its jurisdiction ... any court of the United States, upon the filing of an appropriate pleading, may declare the rights and other legal relations of any interested party seeking such declaration, whether or not further relief is or could be sought. Any such declaration shall have the force and effect of a final judgment or decree and shall be reviewable as such.
. Releasоmers argues that affidavits submitted by appellant are insufficient to oppose summary judgment. The iaw is clear, however, that a party may oppose summary judgment "by any of the kinds of evidentiary materials listed in [Fed.R.Civ.P.] 56(c), except the mеre pleadings themselves."
Finish Eng'g Co. v. Zerpa Indus.,
.Because this issue "clearly implicates the jurisprudential responsibilities of this court in a field within [our] exclusive jurisdiction, i.e., patent law, ... we are not bound by decisions of the regional circuit courts.”
Gardco Mfg., Inc. v.
*955
Herst Lighting Co., etc.,
. bee n. 3, supri
. In an affidavit of Goodyear’s in-house counsel Henry Young, Mr. Young stated that Releasom-ers’ representative said that when the patents in suit issued, Releasomers and Goodyear "would have to talk about infringement of the patents by Goodyeаr and possible licensing since Goodyear might be liable for past patent infringement," and that “the parties might wind up in Federal Court on these issues."
. On this record — in which all the material facts have been made available and are before us— we can in effect grant summary judgment for Goodyear (although it made no motion for summary judgment) that the District Court does have jurisdiction.
See
28 U.S.C. § 2106;
Abrams v. Occidental Petroleum Corp.,
.The District Court has discretion to refuse to proceed under the Declaratory Judgment Act
(.Public Affairs Press v. Rickover,
