Patent Infringement in the Philippines: How Claims Define Protection

In the Philippines, a patent grants its holder exclusive rights over an invention—but only within the boundaries set by the patent's claims. When a competitor uses a similar process without authorization, the dispute often turns on how those claims are interpreted. The Supreme Court recently clarified this area in a ruling involving Tuna Processors, Inc., Frescomar Corporation, and Hawaii International Seafoods, Inc., offering important guidance on the scope of patent protection and the distinction between direct and indirect infringement.

The Role of Patent Claims

Patent law in the Philippines is governed by the Intellectual Property Code (IP Code). A patent holder enjoys exclusive rights to make, use, sell, and import the patented invention—but these rights are not unlimited. They are confined by the specific claims stated in the patent document.

Section 75 of the IP Code is central to this principle: the extent of protection conferred by a patent is determined by its claims, interpreted in light of the description and drawings. In practical terms, the claims define the invention's boundaries, much like a technical description of real property. Anything outside those boundaries falls within the prior art and is not protected.

Direct vs. Indirect Infringement

Patent infringement may be direct or indirect.

• Direct infringement occurs when someone makes, uses, or sells the patented invention without authorization.
• Indirect infringement occurs when a party actively induces another to infringe, or contributes to infringement by supplying a component specifically designed for the infringing use.

Section 76.6 of the IP Code addresses contributory infringement: anyone who actively induces infringement or provides an infringer with a component of a patented product, knowing it is especially adapted for infringing the patented invention, is liable as a contributory infringer.

Consider a hypothetical: a company patents a solar panel with a unique energy-collecting surface. A competitor manufacturing and selling panels with the identical surface commits direct infringement. A supplier who knowingly provides a specialized coating used exclusively for that patented surface may be liable for contributory infringement.

The Tuna Curing Case

The dispute began when Tuna Processors, Inc. (TPI), holder of the Yamaoka Patent—a method for curing raw tuna meat—accused Frescomar of infringement. TPI had licensed the patent to Frescomar, but disputes over royalty payments led TPI to terminate the agreement. TPI also implicated Hawaii International Seafoods, Inc. (HISI) for allegedly inducing Frescomar to breach the license.

The Regional Trial Court initially ruled in TPI's favor, finding Frescomar liable for infringement and HISI for tortious interference. The Court of Appeals affirmed on tortious interference but modified the damages.

The Supreme Court reversed the infringement finding. The Court emphasized that the Yamaoka Patent covered a complete method for curing raw tuna meat—not merely the production of filtered smoke. Frescomar's process ended with smoke production and did not perform all elements of the patented claim. As the Court noted, Frescomar did not complete the curing process, and the filtered smoke was only a component material, not a product of the patented process.

However, the Court upheld HISI's liability for tortious interference. Evidence showed HISI knowingly induced Frescomar to withhold royalty payments, acting without legal justification and with the primary intent of weakening TPI's position in a related U.S. patent dispute.

Practical Takeaways

This ruling offers several lessons for businesses and inventors:

• Claims define protection. The precise language of patent claims is paramount; courts interpret them strictly.
• Process patents require the full process. To prove infringement of a process patent, all essential steps must be performed by the accused party.
• Inducement carries risk. Third parties who induce a breach of a patent license agreement may face liability for tortious interference if their actions lack legal justification.
• Draft carefully. Businesses should draft claims that fully encompass their inventions and structure license agreements to avoid ambiguity.
• Avoid anti-competitive conduct. Inducing breaches for strategic advantage in separate disputes can create independent liability.

Frequently Asked Questions

What is a patent claim? A patent claim is a statement defining the scope of an invention's legal protection, specifying the exact technical features covered.

What is the difference between direct and indirect infringement? Direct infringement involves making, using, or selling the patented invention without authorization. Indirect infringement involves inducing another to infringe or supplying components specifically designed for the infringing use.

What is tortious interference? Tortious interference occurs when a third party induces another to breach a contract, causing damage, without legal justification. Its elements are: (1) a valid contract, (2) the third party's knowledge of the contract, and (3) interference without legal justification.

How can businesses avoid infringement claims? Conduct thorough patent searches before launching new products, obtain proper licenses, and document any modifications to existing processes to demonstrate non-infringement.

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