Navigating Trademark Infringement: How Similar Marks Are Treated in the Philippines

The Supreme Court's 2021 ruling in Kolin Electronics Co., Inc. v. Kolin Philippines International, Inc. (G.R. No. 226444) provides important guidance on how Philippine courts evaluate trademark infringement and opposition cases. The decision clarifies that each trademark dispute must be examined on its own facts, and that a prior ruling involving similar—but not identical—marks cannot automatically control the outcome of a new case.

The Dispute: Two Companies, One Name

The case involved two companies: Kolin Electronics Co., Inc. (KECI), which owned the registered trademark KOLIN for Class 9 goods (voltage regulators, converters, transformers, and similar electronic equipment), and Kolin Philippines International, Inc. (KPII), which sought to register the same word mark KOLIN for Class 35 services (business of manufacturing, importing, assembling, and selling airconditioning units, televisions, refrigerators, and other electronic products).

KECI opposed KPII's application, arguing that registration would damage KECI because the marks were identical and consumers could be confused into thinking the two companies were related. KPII countered that its application covered different goods and services, and pointed to a prior Supreme Court case—the Taiwan Kolin case—where the Court had allowed registration of KOLIN for television and DVD players despite KECI's opposition.

The Issue: When Does Stare Decisis Apply?

The central question was whether the Court of Appeals correctly applied the doctrine of stare decisis (adherence to precedent) by relying on the Taiwan Kolin ruling. The Court held that it did not.

Stare decisis means that courts should follow principles established in prior cases when the facts are substantially the same. However, the Court emphasized that this doctrine does not require blind adherence to precedent. Where the facts differ materially, the prior ruling cannot be applied wholesale.

In this case, the Taiwan Kolin ruling involved KECI's KOLIN (Class 9) mark against an application for KOLIN covering "television and DVD player" products. The present case, by contrast, involved KECI's KOLIN (Class 9) mark and a newer KOLIN (Class 35) registration, against KPII's application for KOLIN covering a broader range of services. Because the coverage of the marks was different, the Court found that the Taiwan Kolin case could not be treated as controlling precedent.

The Ruling: Damage to the Opposer Matters

Under Section 134 of the Intellectual Property Code (Republic Act No. 8293), any person who believes they would be damaged by the registration of a mark may file an opposition. The Court explained that the word "damage" is broad: an opposer may raise any aspect of damage, and even a single valid ground is enough to reject an application.

The Court identified several aspects of damage raised by KECI, including likelihood of confusion between KPII's mark and KECI's existing registrations, and the fact that KPII's KOLIN was identical to KECI's trade name. The Court found that the likelihood of confusion existed and that KPII's application should be rejected.

Significantly, the Court also addressed KPII's argument that it had been authorized by the owner of another KOLIN mark to use the name. The Court rejected this defense, holding that authorization to use a mark for specific goods does not grant a blanket right to register the same mark for all other goods or services, especially where registration would damage third parties.

How Likelihood of Confusion Is Determined

The Court cited Section 123.1(d) of the IP Code, which prohibits registration of a mark that is identical with a registered mark belonging to a different proprietor when used on the same goods or services, closely related goods or services, or where the mark nearly resembles the registered mark as to be likely to deceive or cause confusion.

The Court also referenced the Rules of Procedure for Intellectual Property Rights Cases, which list factors for determining likelihood of confusion, including:

• The strength of the mark
• The degree of similarity between the marks
• The proximity of the products or services
• The likelihood that the plaintiff will bridge the gap
• Evidence of actual confusion
• The defendant's good faith
• The quality of the defendant's product or service
• The sophistication of the buyers

The key takeaway is that courts look at the overall impression on the ordinary purchaser, not just technical classifications. The fact that goods fall under different Nice Classification categories is not decisive.

Practical Takeaways

• Each trademark case is fact-specific. A prior ruling involving the same word mark does not automatically control a new dispute if the goods or services covered are different.
• Authorization is not a blank check. Being allowed to use a mark for certain products does not give the right to register it for all products, particularly where registration would damage another party.
• Likelihood of confusion is a multi-factor test. Courts consider the overall impression on ordinary buyers, including the relatedness of goods or services, actual confusion evidence, and the strength of the mark.
• Opposition is a broad remedy. Under Section 134 of the IP Code, any person who would be damaged by a registration may oppose it, and even one valid ground of damage is sufficient.
• Stare decisis has limits. Courts will not apply precedent where the facts are materially different or where the prior ruling conflicts with the law as currently interpreted.

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