Case Summary (G.R. No. L-25239)
Petitioner
Domiciano A. Aguas, a building contractor and defendant in the trial court, was found by the lower courts to have manufactured and sold tiles produced from molds substantially identical to those protected by Patent No. 658 and to have procured duplicate molds from F.H. Aquino & Sons.
Respondent
Conrado G. de Leon, the patentee, claimed to be the inventor of an improvement in the tile-making process and sought injunctive relief and monetary damages for infringement of Patent No. 658; F.H. Aquino & Sons was found to have made the infringing molds.
Key Dates
Patent application filed December 1, 1959; Letters Patent No. 658 issued May 5, 1960; complaint filed April 14, 1962; trial court decision December 29, 1965; Court of Appeals affirmed August 5, 1969 (modifying moral damages); Supreme Court decision reviewed: January 30, 1982; patent right expired May 5, 1977.
Applicable Law and Constitutional Context
The action was governed by the Philippine patent law (Republic Act No. 165) as applied in the period of the litigation. Because the Supreme Court decision under review was rendered in 1982, the constitutional context applicable to the decision is the 1973 Constitution.
Procedural History
De Leon sued Aguas and F.H. Aquino & Sons for patent infringement, obtained a preliminary injunction, and proceeded to trial. The trial court declared the patent valid and infringed and awarded injunctive relief and damages. Aguas appealed to the Court of Appeals, which affirmed the trial court but reduced moral damages from P50,000 to P3,000. Aguas sought certiorari review in the Supreme Court raising challenges to patent validity and the damages awarded.
Trial Court Findings and Judgment
The trial court declared Patent No. 658 valid and infringed, enjoined defendants from making, using, selling or supplying molds or tiles embodying the patented invention, ordered delivery of infringing items, and awarded damages: actual damages P10,020.99; moral damages P50,000; exemplary damages P5,000; attorney’s fees P5,000; and costs.
Court of Appeals Disposition
The Court of Appeals affirmed the trial court’s judgment in all respects but reduced the award of moral damages from P50,000 to P3,000. The COA found that the patentee had introduced patentable improvements and that the defendants’ conduct warranted compensation for moral injury, though the trial court’s large award was excessive.
Facts Found by the Court of Appeals
COA factual findings included that De Leon filed for and received Patent No. 658; F.H. Aquino & Sons engraved molds embodying De Leon’s patented improvements at his direction; Aguas purchased patented tiles bearing the patent number and later requested Aquino to reproduce molds with the same characteristic features; molds made for Aguas produced tiles substantially identical in critical dimensions (lip width, easement, critical depth) except for a slight size difference (4" vs. 4-1/4"); and Aguas sold those tiles to the public.
Issues Presented on Review
Petitioner principally challenged: (1) the validity of Patent No. 658 on grounds that it covered the old, non-patentable process or lacked novelty and inventiveness; and (2) the propriety and quantum of damages imposed against him.
Supreme Court Analysis — Patent Validity and Presumption
The Supreme Court recognized that the Patent Office’s issuance of Letters Patent gives rise to a legal presumption of patentability, and that technical questions of novelty and inventiveness are matters the Patent Office is particularly suited to determine. The Court found that petitioner failed to overcome that presumption or to present concrete proof that De Leon’s improved process had been used by others prior to his patent. The patent’s Claims and Specifications disclosed novel features (critical depth, corresponding easement and lip width enabling tiles as thin as 1/8 inch, an ideal composition of cement and fine sand permitting durability despite thinness, and the capacity for mass production without intolerable breakages), and these combined features were held to constitute an improvement that was more than mere mechanical skill.
Supreme Court Analysis — Infringement Findings
The Supreme Court accepted the Court of Appeals’ factual determinations that the molds made for Aguas embodied the characteristic features of De Leon’s patented molds, that Aguas used those molds to manufacture tiles substantially identical in fu
...continue readingCase Syllabus (G.R. No. L-25239)
Procedural History
- Original complaint for infringement of patent filed April 14, 1962 in the Court of First Instance of Rizal at Quezon City by Conrado G. de Leon against Domiciano A. Aguas and F.H. Aquino & Sons alleging infringement of Philippine Letters Patent No. 658.
- On April 14, 1962, an order granting a Writ of Preliminary Injunction in favor of plaintiff de Leon was issued.
- Trial court rendered decision dated December 29, 1965: declared plaintiff's patent valid and infringed; issued perpetual injunction; ordered delivery of infringing items; and ordered defendants jointly and severally to pay specified monetary awards (actual, moral, exemplary damages, attorney's fees, costs).
- Defendant Domiciano A. Aguas appealed to the Court of Appeals, assigning six errors challenging validity of the patent, non-cancellation of the patent, non-dismissal of complaint, and the infringement and damages findings.
- On August 5, 1969, the Court of Appeals affirmed the trial court's decision with the modification that moral damages awarded to plaintiff-appellee were reduced to P3,000.00.
- Petition for certiorari (G.R. No. L-32160) brought before the Supreme Court; decision issued January 30, 1982 affirming the Court of Appeals' decision without pronouncement as to costs.
Parties and Roles
- Plaintiff-Appellee: Conrado G. de Leon — patentee, alleged original first and sole inventor of improvements in the process of making mosaic pre-cast tiles; owner of Letters Patent No. 658.
- Defendants-Appellants: Domiciano A. Aguas — tile manufacturer and building contractor accused of making, using and selling tiles embodying the patented improvement; F.H. Aquino & Sons — alleged to have made and furnished engravings, castings and devices used in apparatus for making tiles embodying the patented invention.
- Only defendant Domiciano A. Aguas appealed; F.H. Aquino & Sons did not appeal trial court decision.
Facts as Found by the Court of Appeals
- De Leon filed patent application December 1, 1959; Letters Patent No. 658 issued May 5, 1960 for a “new and useful improvement in the process of making mosaic pre-cast tiles” (Exh. L).
- F.H. Aquino & Sons engraved moulds embodying de Leon’s patented improvement; plaintiff furnished escayola model and explained plans, specifications, lip width, artistic slope of easement and critical depth.
- Engraver Enrique Aquino knew the moulds for plaintiff possessed the new features and characteristics covered by plaintiff’s patent.
- Aguas purchased from plaintiff tiles bearing patent number imprinted on the back (Exhs. A–E).
- Aguas, through a representative (Mr. Leonardo), requested Aquino to make engravings of the same type for him; Aquino knew these moulds would be used to produce tiles similar to plaintiff’s.
- The moulds engraved by Aquino for Aguas contained the very same characteristic features of plaintiff’s mould; Aguas used these moulds and sold the tiles (Exhs. 1–3 and Exhs. A–E).
- Plaintiff’s and Aguas’ tiles are sculptured pre-cast wall tiles substantially identical in size, easement, lip width and critical depth of deepest depression; the only significant difference was tile size (plaintiff 4 x 4 inches; Aguas 4-1/4 x 4-1/4 inches).
- No proof was adduced that any tile of the same kind had been produced by others before appellee; appellant failed to present earlier source of similar tiles despite opportunity.
Plaintiff’s Allegations, Claims and Relief Sought
- De Leon alleged he was original inventor of improvements in process of making mosaic pre-cast tiles and had complied with statutes and Patent Office rules; Patent No. 658 lawfully granted.
- Alleged invention was new, useful, not previously known or used in the country, not described in print before his invention, and not previously patented abroad in a way to bar Philippine application.
- Claimed exclusive license to make, use and sell throughout the Philippines improvements set forth in Letters Patent No. 658.
- Alleged public demand, commercial success and compliance with marking statutes; alleged public generally acknowledged validity of Patent No. 658 and respected plaintiff’s rights.
- Alleged defendant Aguas infringed by making, using and selling tiles embodying patented invention; F.H. Aquino & Sons infringed by making and furnishing engravings, castings and devices used in apparatus for making such tiles.
- Sought preliminary injunction, damages (actual, loss of profits to be determined by accounting, moral and exemplary or corrective damages of P90,000.00), and attorney’s fees and litigation expenses of P5,000.00.
Defendant’s (Aguas’) Answer and Defenses
- Denied plaintiff’s allegations and contested novelty and inventiveness of the improvements, alleging many tile-making factories in the Philippines and abroad used the process years before de Leon’s alleged invention.
- Alleged Letters Patent No. 658 was unlawfully acquired by misrepresentation that the process is new and that plaintiff is the owner when the process was allegedly known and used by almost all tile makers long before de Leon’s claimed use and registration.
- Contended registration conferred no right because of gross misrepresentation and non-patentable subject matter.
- Asserted defendant had valid patents (Nos. 108, 109, 110 issued December 21, 1961) on designs for concrete decorative wall tiles and that his products differ from plaintiff’s; therefore he cannot be guilty of infringement.
Trial Court Findings and Judgment (Dec. 29, 1965)
- Declared plaintiff’s patent valid and infringed.
- Granted a perpetual injunction restraining defendants, their agents and persons acting under their authority from making, using or vending tiles embodying the patented invention and from making, manufacturing, using or selling engravings, castings and devices for such apparatus.
- Ordered delivery to plaintiff of all infringing tiles, engravings, castings and devices in defendants’ possession or control.
- Monetary awards ordered jointly and severally against defendants:
- (a) Actual