Maguan vs. Court of Appeals

A preliminary injunction will not issue in a patent infringement case unless the validity of the patent is clear and beyond question; where competent evidence raises a fair question of invalidity, the application for preliminary injunction must be denied. The trial court in an infringement suit has jurisdiction to determine the validity of the patent under Sections 45 and 46 of the Patent Law, and the mere issuance of letters patent does not establish the clear and unmistakable right essential for injunctive relief.

Rosario C. Maguan, doing business as Swan Manufacturing, held utility model patents for powder puffs: UM-423 (extended under Extension No. UM-109), UM-450 (Extension No. UM-110), and UM-1184. Susana Luchan, operating Susana Luchan Powder Puff Manufacturing, manufactured and sold similar powder puffs. In July 1974, Maguan demanded that Luchan cease alleged infringement. Luchan countered that her products were different, that the patents were void for lack of novelty and non-patentability, and she promptly filed three cancellation petitions with the Philippine Patent Office. Maguan then filed an infringement complaint with a prayer for preliminary injunction before the Court of First Instance of Rizal.

• Parties and Patents: Petitioner Rosario Maguan, doing business as Swan Manufacturing, held three utility model patents granted by the Philippine Patent Office for powder puffs: UM-423 (extended as Extension No. UM-109 for five years from October 6, 1971), UM-450 (extended as Extension No. UM-110 for five years from January 26, 1972), and UM-1184 (for five years from April 5, 1974). Private respondent Susana Luchan, under the firm name Susana Luchan Powder Puff Manufacturing, was engaged in manufacturing and selling powder puffs to the cosmetics industry.
• Demand and Response: By letter dated July 10, 1974, petitioner informed private respondent that the powder puffs the latter produced and sold were identical or substantially identical to the patented articles and demanded immediate discontinuance of the alleged infringement. Private respondent replied that her products differed, asserted that the patents were void because the utility models lacked novelty and patentability, and claimed the patentee was not the true and actual author nor derived rights from such author.
• Cancellation Petitions: On July 25, 1974, private respondent filed with the Philippine Patent Office three petitions for cancellation: Inter Partes Case No. 838 (against Extension No. UM-109), No. 839 (against UM-1184), and No. 840 (against Extension No. UM-110), raising lack of novelty and other grounds of invalidity.
• Infringement Action and Answer: On August 24, 1974, petitioner filed Civil Case No. 19908 before the then Court of First Instance of Rizal, Pasig Branch, seeking damages with a prayer for a writ of preliminary injunction. Private respondent’s answer denied that her products were identical or substantially identical to the patented articles and alleged, by way of affirmative defenses, that the patents were void for two principal reasons: (a) years before the patent applications, powder puffs of the kind applied for were already existing and publicly sold in the Philippines and abroad; and (b) the claimed construction or manufacturing process in the applications was merely a complicated and impractical version of an old, simple method long known to the cosmetics industry and belonging to the general public, while the UM-1184 patent was merely an imitation of a product already in the public domain.
• Issuance and Challenge of the Preliminary Injunction: On September 18, 1974, the trial court granted petitioner’s application and issued a writ of preliminary injunction enjoining private respondent, her agents, servants, and employees from manufacturing, selling, or using products embodying the patented utility models. Private respondent moved for reconsideration, arguing that the pendency of Patent Office cancellation proceedings prevented the issuance of an injunction. The trial court denied reconsideration on September 11, 1975.
• Proceedings before the Court of Appeals: Private respondent filed a petition for certiorari with the Court of Appeals on September 29, 1975. The CA initially granted a temporary restraining writ on October 15, 1975, then on February 16, 1976 dismissed the petition and lifted its own writ, finding no grave abuse of discretion. On motion for reconsideration, the CA reversed course on July 6, 1976, ruling that the trial court had jurisdiction to determine patent invalidity, that private respondent had presented substantial evidence raising a fair question of validity, and that the trial court’s issuance of the writ without evaluating that evidence constituted grave abuse of discretion. The CA set aside its prior decision, issued the writ of certiorari, nullified the trial court’s injunctive orders, and reinstated its own writ of preliminary injunction as permanent.

• Lack of Jurisdiction over Patent Validity: Petitioner argued that the trial court lacked jurisdiction to determine the validity of the patents because cancellation proceedings were then pending before the Philippine Patent Office, which had primary and exclusive jurisdiction over questions of patent invalidity.
• No Grave Abuse of Discretion: Petitioner contended that the trial court did not commit grave abuse of discretion in issuing the preliminary injunction because a patent carries a prima facie presumption of validity upon issuance, and the right to exclusive manufacture and sale was clear.
• Certiorari Improper: Petitioner maintained that certiorari was not the proper remedy because private respondent had an adequate and speedy remedy by ordinary appeal from the injunctive orders.
• Finality of CA Resolutions: Petitioner asserted that the Court of Appeals’ July 6, 1976 and November 4, 1976 resolutions had become final and executory because the trial court judge, as a necessary party, failed to appeal them.
• Prescription: Petitioner claimed that private respondent’s defense of invalidity was barred by prescription under Section 28 of the Patent Law.

• Trial Court’s Jurisdiction under the Patent Law: Respondent countered that Sections 45 and 46 of Republic Act No. 165 expressly authorize a trial court in an infringement action to determine the validity of a patent as a defense, and the law provides that a final judgment of invalidity shall be certified to the Patent Office for cancellation.
• Fair Question of Invalidity Precludes Injunctive Relief: Respondent argued that she presented substantial evidence—64 exhibits and oral testimonies of five witnesses—showing that powder puffs identical to those covered by the patents were publicly known and sold as early as 1963, long before the patent applications were filed, thereby raising a fair question of novelty and validity that barred issuance of a preliminary injunction under both Philippine and American patent jurisprudence.
• Grave Abuse of Discretion: Respondent contended that the trial court gravely abused its discretion by issuing the injunction without considering her defense of invalidity, mistakenly believing that such questions were within the exclusive jurisdiction of the Patent Office.
• Adequacy of Certiorari: Respondent argued that certiorari was proper because the trial court’s order was of such general tenor that it effectively prevented her from selling any kind of powder puff, making an ordinary appeal inadequate and the broader interests of justice requiring the extraordinary remedy.
• Judge as Nominal Party: Respondent countered that under Section 5, Rule 65 of the Revised Rules of Court, the judge whose order is under attack is merely a nominal party; it is the interested party—petitioner Maguan—who has the duty to defend the proceedings, and her failure to pursue an appeal did not render the CA resolutions final as to petitioner.

• Jurisdiction over Patent Validity: Whether the trial court in an infringement action had jurisdiction to determine the invalidity of the patents while cancellation proceedings were still pending before the Philippine Patent Office.
• Grave Abuse of Discretion: Whether the trial court committed grave abuse of discretion in issuing the writ of preliminary injunction despite the defendant’s evidence raising a fair question of patent invalidity.
• Propriety of Certiorari: Whether certiorari was the proper remedy to challenge the trial court’s orders granting preliminary injunction.

• Jurisdiction over Patent Validity: The trial court had full jurisdiction to determine patent validity. Under the Patent Law, a patentee may bring an infringement action before the proper court to secure an injunction for the protection of his rights (Sec. 42). The law expressly allows the defense of invalidity in such an action (Sec. 45), and Section 46 reinforces this by providing that if the court finds the patent invalid, the Director of Patents shall, upon certification of the final judgment, issue an order cancelling the patent—a duty that is merely ministerial. Long-standing precedents from Vargas v. F.M. Yaptico & Co. onward hold that when a patent is sought to be enforced, questions of invention, novelty, and prior use are open to judicial examination. The pendency of cancellation proceedings in the Patent Office does not divest the trial court of this jurisdiction.
• Grave Abuse of Discretion: The trial court committed grave abuse of discretion. Although a patent carries a prima facie presumption of validity upon issuance, private respondent adduced considerable evidence—numerous exhibits and testimonies—tending to show that identical powder puffs were in public use and sale years before the patent applications were filed, thereby raising a fair question of invalidity for lack of novelty. The trial court refused to consider this evidence under the mistaken belief that only the Patent Office could rule on validity. Both Philippine and American patent law require that a preliminary injunction for patent infringement shall not issue unless the validity of the patent is clear and beyond question; the mere issuance of letters patent is insufficient to support such drastic relief. Because the right to the relief demanded was not clear and unmistakable, the two requisites for a preliminary injunction—existence of the right to be protected and violation of that right—were not satisfied. The trial court’s complete disregard of the defense evidence constituted grave abuse of discretion.
• Propriety of Certiorari: Certiorari was proper. The trial court’s injunctive order was framed in such general terms that it could be interpreted to bar private respondent from selling any kind of powder puff whatsoever. Under such circumstances, an ordinary appeal was clearly inadequate. As held in Sanchez v. Court of Appeals, the prerogative writ of certiorari may be applied for even where an appeal exists, when the broader interests of justice so require or an ordinary appeal is not an adequate remedy. The grave abuse of discretion attending the issuance of the writ supplied the necessary basis for the extraordinary remedy.

• Preliminary Injunction in Patent Infringement Cases — A writ of preliminary injunction will not issue for patent infringement unless the validity of the patent is clear and beyond question and the record conclusively proves the defense is sham. The issuance of letters patent, standing alone, is insufficient to support such drastic relief. Where competent evidence raises a fair question of invalidity—such as lack of novelty—the application for preliminary injunction must be denied pending full trial on the merits.
• Jurisdiction of Trial Court over Patent Validity — In an infringement action, the trial court has jurisdiction to examine and determine the validity of the patent as a defense. Questions of invention, novelty, and prior use are open to judicial examination. Under Sections 45 and 46 of Republic Act No. 165, the defense of invalidity may be fully litigated, and a final court finding of invalidity obliges the Director of Patents to cancel the patent, a merely ministerial duty. The pendency of a cancellation proceeding before the Patent Office does not divest the trial court of this jurisdiction.
• Requisites for Preliminary Injunction — Before a writ of preliminary injunction may issue, the applicant must establish two requisites: (1) the existence of a clear and unmistakable right to be protected, and (2) an actual or threatened violation of that right. A doubtful title or a fairly debatable claim does not warrant the relief.

• “When a patent is sought to be enforced, the questions of invention, novelty or prior use, and each of them, are open to judicial examination.” — Restates the settled rule that courts have full authority to inquire into patent validity in infringement suits.
• “In patent cases a preliminary injunction will not issue for patent infringement unless the validity of the patent is clear and beyond question. The issuance of letters patent, standing alone, is not sufficient to support such drastic relief.” — Articulates the heightened standard for preliminary injunctive relief in patent cases.
• “As a general rule because of the injurious consequences a writ of injunction may bring, the right to the relief demanded must be clear and unmistakable.” — Applies the general equitable principle to patent disputes.
• “For failure to determine first the validity of the patents before aforesaid issuance of the writ, the trial court failed to satisfy the two requisites necessary if an injunction is to issue, namely: the existence of the right to be protected and the violation of said right.” — Pinpoints the specific error amounting to grave abuse of discretion.

• Vargas v. F.M. Yaptico & Co., 40 Phil. 199 (1919) — Controlling precedent; established that when a patent is sought to be enforced, questions of invention, novelty, and prior use are subject to judicial examination.
• Vargas v. Chua, 57 Phil. 790 (1933) — Followed; reaffirmed that the defense of prior use and want of novelty is open to judicial inquiry in an infringement action.
• Frank and Gohn v. Kosuyama, 59 Phil. 207 (1933) — Followed; applied the rule that an invention must possess novelty, originality, and precedence, and that a single instance of prior public use for more than two years before the application is fatal to patent validity.
• Sanchez v. Court of Appeals, 69 SCRA 328 (1976) — Followed; certiorari may lie even where an appeal is available if the broader interests of justice require or an ordinary appeal is inadequate.
• Buayan Cattle Co., Inc. v. Quintillan, 128 SCRA 276 (1984) — Followed; the two requisites for a preliminary injunction are the existence of a clear right and its violation.
• Sangki v. Comelec, 21 SCRA 1392 (1967) — Followed; the right to injunctive relief must be clear and unmistakable.
• Ramos v. Court of Appeals, 95 SCRA 359 (1980) — Followed; dissolution of a writ of preliminary injunction is proper where the applicant’s title is doubtful.
• Alcasid v. Samson, 102 Phil. 735 (1957) — Followed; the judge whose order is under attack in a certiorari proceeding is merely a nominal party.
• Tarona v. Sayo, 67 SCRA 508 (1975) — Followed; reiterated the nominal party rule.
• Lim Se v. Argel, 70 SCRA 378 (1976) — Followed; applied the same principle.

• Sections 37, 42, 45, and 46, Republic Act No. 165 (Patent Law) — Section 37 grants the patentee exclusive rights to make, use, and sell the patented article; Section 42 authorizes the patentee to bring an infringement action before the proper court and secure an injunction; Section 45 enumerates the defenses available in an infringement action, including invalidity of the patent; Section 46 directs the Director of Patents to issue an order cancelling a patent or any claim found invalid by a court upon certification of the final judgment. Collectively, these provisions grounded the trial court’s jurisdiction to determine validity and the availability of the invalidity defense.
• Section 9, Republic Act No. 165 — Defines when an invention is not considered new or patentable, including if it was known or used by others in the Philippines before the invention, or if it had been in public use or on sale in the Philippines for more than one year before the application. Applied to the defense of lack of novelty.
• Section 5, Rule 65, Revised Rules of Court — Provides that in certiorari proceedings, the judge is a nominal party and the person interested in sustaining the proceedings shall appear and defend in his own behalf and on behalf of the court. Applied to reject petitioner’s argument that the Court of Appeals resolutions became final because the trial judge did not appeal.

Feria (Chairman), Fernan, Gutierrez, Jr., and Feliciano, JJ., concurred. Alampay, J., took no part.