Legal Insights

Plain-language guides and case briefs on Philippine law — researched from the firm's law library of 184,000+ statutes, Supreme Court decisions, and agency issuances, and written so non-lawyers can understand and act on them.

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Mar 19, 2002 trademark law intellectual property brand name disputes prior use preliminary injunction philippine supreme court

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

Philippine Supreme Court ruling on why trademark rights based on prior use trump copyright or patent registrations in brand name disputes.

Sep 5, 1997 patent law intellectual property prior art utility model presumption of validity philippine patent office

Patent Novelty, Prior Art, and the Presumption of Validity in Philippine Patent Law

Philippine Supreme Court ruling on patent novelty, prior art, and the heavy burden to overcome the presumption of patent validity.