Prior Use of a Brand Name Prevails Over Copyright or Patent Claims

The Supreme Court has long recognized that a trademark, a copyright, and a patent are distinct intellectual property rights that cannot be used interchangeably to claim ownership over a brand name. In Kho v. Court of Appeals (G.R. No. 115758, March 19, 2002), the Court clarified that registering a product name or container under copyright or patent laws does not automatically grant exclusive rights over it as a trademark. The case serves as an important reminder that in brand name disputes, prior use of the mark—not the nature of the registration—determines who has the superior right.

The Dispute Over "Chin Chun Su"

The petitioner, Elidad C. Kho, doing business as KEC Cosmetics Laboratory, filed a complaint for injunction and damages against Summerville General Merchandising and Company and Ang Tiam Chay. Kho claimed ownership of copyright registrations for "Chin Chun Su" and the "Oval Facial Cream Container/Case," as well as patent rights over "Chin Chun Su & Device" and "Chin Chun Su" for medicated cream, which she purchased from a prior registrant.

Kho alleged that Summerville advertised and sold cream products under the brand name "Chin Chun Su" in similar containers, misleading the public and causing a decline in her business. She sought a writ of preliminary injunction to stop the alleged infringement.

Summerville countered that it was the exclusive authorized importer and distributor of genuine "Chin Chun Su" products manufactured by a Taiwanese company. It claimed that Kho obtained her copyrights through misrepresentation and that the authority of the prior patent assignee had already been terminated.

The Trial Court and the Court of Appeals

The trial court granted Kho's application for a preliminary injunction, requiring her to post a P500,000 bond. Summerville challenged this before the Court of Appeals, which nullified the injunction orders. The appellate court reasoned that registration in the Supplemental Register of the Philippine Patent Office cannot be equated with registration in the Principal Register, which is duly protected by the Trademark Law.

The Court of Appeals also noted that the presumption of ownership from a Supplemental Register registration is rebuttable, not conclusive. One may be declared an unfair competitor even if a competing trademark is registered.

The Supreme Court's Ruling

The Supreme Court denied Kho's petition and affirmed the Court of Appeals' decision. The Court emphasized that trademark, copyright, and patent are different intellectual property rights that cannot be interchanged.

Trademark is any visible sign capable of distinguishing the goods or services of an enterprise, including a stamped or marked container of goods. Copyright is confined to literary and artistic works that are original intellectual creations, protected from the moment of creation. Patent refers to any technical solution to a problem that is new, involves an inventive step, and is industrially applicable.

The Court held that the name and container of a beauty cream product are proper subjects of a trademark. To be entitled to exclusive use, the user must prove that she registered the trademark or used it before anybody else did. Kho's copyright and patent registrations did not guarantee her exclusive rights because these are not appropriate subjects of those intellectual property rights.

The Requirement for a Clear Right

A preliminary injunction may be granted only when the applicant shows facts entitling her to the relief demanded. The invasion of the right sought to be protected must be material and substantial, the right must be clear and unmistakable, and there must be urgent and paramount necessity for the writ to prevent serious damage.

Since Kho failed to prove a clear right over the name and container to the exclusion of others—not having proven trademark registration or prior use—the issuance of the preliminary injunction was improper.

The Court also noted that the trial court's subsequent decision on the merits, which barred Kho from using the trademark and upheld Summerville's right to use it, rendered the preliminary injunction issue moot and academic.

Practical Takeaways

• Register your trademark early. Copyright and patent registrations do not protect brand names; only trademark registration or prior use does.
• Prior use matters. The first to use a mark in commerce, not the first to register it under other intellectual property laws, generally holds the superior right.
• Know the limits of each IP right. Copyright protects creative works, patents protect inventions, and trademarks protect source identifiers. Do not confuse them.
• Preliminary injunctions require a clear right. Courts will not issue injunctive relief based on speculative or weak claims of ownership.
• Technical objections may not save a weak case. Courts may disregard procedural lapses when substantial justice requires a ruling on the merits.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.