Unfair Competition as a Continuing Offense: What the Petron v. Yao Ruling Means

In the Philippines, the line between aggressive competition and unlawful imitation can be thin. A recent Supreme Court ruling involving Petron Corporation clarifies a critical question for businesses: when counterfeit goods are sold in multiple locations, is that one continuing crime or several separate offenses? The answer determines where a case can be filed and how it must be prosecuted.

The Case at a Glance

Petron Corporation accused Masagana Gas Corp. of refilling and selling Petron's Gasul LPG cylinders without authorization. Investigators from Petron and the National Bureau of Investigation conducted test-buys at Masagana's refilling plant in Trece Martires, Cavite, and later discovered that Masagana was also distributing the cylinders in Makati City.

This led to two separate criminal informations for unfair competition—one filed in Cavite and another in Makati. The respondents moved to quash the Makati case, arguing that unfair competition is a continuing or transitory offense. Since the Cavite case was filed first, they claimed the Makati court lacked jurisdiction.

The Makati Regional Trial Court initially denied the motion but later reversed itself and quashed the information. The Court of Appeals affirmed. On appeal, the Supreme Court upheld the lower courts in Petron Corporation v. Yao, Sr., a 2021 decision. The full case citation is not available in the ASG law library, but the ruling's substance is discussed here.

What the Law Says About Unfair Competition

Unfair competition is defined under Section 168 of the Intellectual Property Code (Republic Act No. 8293). The provision penalizes any person who sells goods giving them the general appearance of another's products—through packaging, devices, or words—in a way that is likely to deceive purchasers or defraud another of legitimate trade.

The essence of the offense is "passing off"—making one's goods appear to be those of another to exploit the goodwill and reputation of an established brand.

Why the Court Called It a Continuing Offense

A continuing or transitory offense is one where essential elements occur in different places. Under the Revised Rules of Criminal Procedure, such an offense may be tried in any court where any essential ingredient occurred.

The Supreme Court ruled that unfair competition is inherently a continuing offense. The sales in Cavite and Makati were not separate crimes but mere ingredients of a single continuing violation. As the Court explained, the series of selling acts was simply the means to carry out the primary intent to deceive the consuming public.

This reasoning mirrors the Court of Appeals' observation that the alleged selling of LPG cylinders was the instrument for violating Petron's intellectual property rights—not a collection of independent crimes.

What This Means for Businesses

The ruling has practical consequences for intellectual property enforcement:

Jurisdiction is flexible but priority matters. Because unfair competition is a continuing offense, a complaint may be filed in any court where an essential act occurred. However, the court that first acquires jurisdiction typically handles the case. Filing promptly in the right venue establishes priority.

Evidence gathering should cover all locations. Since acts in different places form one offense, evidence from each site strengthens a single, unified case rather than requiring separate prosecutions.

Defendants cannot easily escape jurisdiction. A respondent cannot defeat a case simply by pointing to acts in another city. The continuing nature of the offense allows prosecution where any part of the scheme occurred.

Practical Takeaways

• Monitor distribution channels for unauthorized use or sale of branded products, including refilling or repackaging.
• Understand continuing offense rules to determine the best venue for filing criminal complaints.
• Act quickly upon suspicion—gather evidence and consult counsel to file in the proper jurisdiction before another court acquires priority.
• Document all locations where infringing acts occur; they form part of one continuing violation.
• Register trademarks and educate consumers to strengthen protection against passing off.

The Petron ruling reinforces that unfair competition is a single, ongoing wrong against a business's goodwill—not a series of isolated acts. For companies protecting their brands, the takeaway is clear: treat every instance of counterfeiting as part of one scheme, and pursue enforcement strategically across all affected locations.

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