Case Summary (G.R. No. 155635)
Petitioner’s Primary Allegations and Evidence
Petitioner alleged (a) lack of inventiveness, novelty and utility of the utility model; (b) noncompliance with Sec. 14, RA No. 165, as amended; (c) lack of entitlement as original inventor or derivative acquisition; and (d) procurement of the letters patent by fraud or misrepresentation. She also asserted that the utility model had been publicly known, used, or on sale in the Philippines more than one year before respondent’s patent filing. Documentary and physical evidence offered by petitioner included an affidavit alleging prior art (Exh. aA), brochures distributed by Manila Gas Corporation and Esso (Exhs. aD, aE) depicting Ransome-type burners, a model allegedly corresponding to the patented burner (Exh. aK), petitioner’s own manufactured burner called a “Ransome” burner (Exh. aL), and a burner cup of an imported Ransome burner (Exh. aM). Witnesses for petitioner included petitioner herself, her husband Ong Bun Tua (former helper at United Foundry, alleged to have helped cast earlier burners), and Fidel Francisco (former Manila Gas supervisor claiming knowledge of imported Ransome burners).
Respondent’s Evidence and Testimony
Respondent presented one witness, Rolando Madolaria, General Supervisor at United Foundry, who described the company’s prior manufacture of burners, the existence of early single-piece burners with non-detachable components, complaints about early models, and respondent Melecia Madolaria’s revision and improvement process in late 1978. Rolando testified to experimental casting of revised models, subsequent successful testing in the presence of Melecia Madolaria, and respondent’s decision to file a utility model application in December 1979.
Decision of the Director of Patents (First-Level Factfinding)
Director of Patents Decision No. 86-56 (7 July 1986) denied petitioner’s cancellation action. The Director concluded the evidence did not convincingly establish anticipation or lack of novelty. Key reasons: the pictorial representations (brochures) did not clearly or convincingly show a device identical or substantially identical to the patented model; anticipation must be established by a single prior-art reference showing all elements, and petitioner’s references failed that test; the brochures were undated and thus could not serve as prior public disclosures; petitioner’s physical models lacked any indication of manufacture or importation dates and in some instances were incomplete, preventing meaningful comparison; and the testimony of petitioner’s witnesses lacked corroborative documentary proof and, in Ong’s case, his credibility was weakened by admissions that he had no connection with Manila Gas and could not produce importation records. The Director also found no evidence that respondent obtained the letters patent by fraud or misrepresentation.
Court of Appeals’ Affirmation
On 15 October 1993 the Court of Appeals affirmed the Director of Patents’ decision. The Court of Appeals concurred with the Patent Office’s factual findings and legal application, including the assessment that petitioner failed to discharge the heavy burden of clear and convincing evidence required to overturn the presumption of validity afforded to an issued patent.
Issues Presented to the Supreme Court
Petitioner sought review on certiorari, contending that (a) the Court of Appeals relied on imaginary differences between the patented model and alleged prior art; (b) the Court misapprehended facts; (c) the Court unduly relied on respondent’s sole witness; and (d) the Court erred in not canceling the letters patent.
Legal Framework: Patentability, Utility Models, and Burden of Proof
The Court applied RA No. 165 (as amended), notably Sec. 7 (patentable inventions must be new and useful) and Sec. 55 (utility models are new models of implements or industrial products lacking inventive quality but having practical utility by reason of form, configuration, construction or composition). The element of novelty is essential; a device known or used by others prior to the applicant’s filing renders a patent improper. The issuance of a patent creates a presumption of legality and that the patentee was the original and first inventor; this presumption yields only to clear and cogent evidence. The burden to prove want of novelty or anticipation is heavy and is satisfied only by clear and satisfactory proof that overcomes reasonable doubt. Anticipation must be established by a single prior art reference that discloses all elements, expressly or under inherency principles.
Application of Law to the Evidentiary Record
The Court accepted and reiterated the Patent Office’s factual findings. It emphasized that the brochures and other documentary exhibits were undated and therefore could not be relied upon as prior art showing public distribution or use prior to respondent’s filing. Physical models and components offered by petitioner either lacked indicia of manufacture or importation dates or were incomplete for meaningful comparison. Oral testimony alone, uncorroborat
...continue readingCase Syllabus (G.R. No. 155635)
Case Citation, Court and Date
- Reported at 344 Phil. 240, First Division, G.R. No. 113388.
- Decision promulgated on September 05, 1997.
- Decision penned by Justice Bellosillo; Justices Vitug, Kapunan, and Hermosisima, Jr., concurred.
Nature of the Proceeding
- Petition for review on certiorari to the Supreme Court challenging the Court of Appeals’ affirmation of the Director of Patents’ denial of petitioner’s action for cancellation of a letters patent.
- The underlying subject is the validity of Letters Patent No. UM-4609 for an LPG gas burner.
Parties
- Petitioner: Angelita Manzano.
- Respondents: Court of Appeals (as respondent in the certiorari) and Melecia Madolaria, as assignor to New United Foundry and Manufacturing Corporation (UNITED FOUNDRY).
Patent at Issue
- Letters Patent No. UM-4609 issued for an “LPG Burner.”
- Patent issued to Melecia Madolaria on July 22, 1981 according to the records in the case.
Relief Sought by Petitioner and Grounds Alleged
- Petitioner filed with the Philippine Patent Office on February 19, 1982 an action for cancellation of Letters Patent No. UM-4609.
- Allegations asserted by petitioner:
- The utility model (LPG gas burner) was not inventive, new, or useful.
- The specification of the letters patent did not comply with Section 14, R.A. No. 165, as amended.
- Melecia Madolaria was not the original, true and actual inventor, nor did she derive rights from the original inventor.
- The letters patent was secured by means of fraud or misrepresentation.
- Additional allegations in support of cancellation:
- The utility model was known or used by others in the Philippines for more than one (1) year before “she” filed her application for letters patent on December 9, 1979 (as alleged in the petition).
- Products produced according to the utility model had been in public use or on sale in the Philippines for more than one (1) year before the patent application was filed.
Evidence and Exhibits Presented by Petitioner
- Documentary exhibits:
- Affidavit of petitioner alleging prior art, marked Exh. aA;a.
- Brochure distributed by Manila Gas Corporation showing a pictorial representation of a Ransome burner made by Ransome Torch and Burner Company, USA, marked Exh. aD;a.
- Brochure distributed by Esso Gasul (Esso Standard Eastern, Inc.), marked Exh. aE.a, showing pictures and top elevation/perspective views of a similar burner.
- Physical models and parts:
- Alleged model of an LPG burner covered by the Letters Patent, marked Exh. aKa, which petitioner testified was given to her in January 1982 by a customer who allegedly acquired it from UNITED FOUNDRY.
- Petitioner’s own model of an LPG burner termed a “Ransome” burner, marked Exh. aL,a, allegedly manufactured in 1974 or 1975 and sold by her business BESCO METAL.
- A burner cup of an imported “Ransome” burner, marked Exh. aMa, alleged to have existed before the respondent’s patent application.
- Witnesses presented by petitioner:
- Petitioner Angelita Manzano: testified concerning her husband’s employment, casting activities, operation of BESCO METAL and possession/sale of burners.
- Ong Bun Tua (petitioner’s husband): testified he worked as helper at UNITED FOUNDRY from 1965–1970 and assisted in casting LPG burners similar to the patented model.
- Fidel Francisco: testified to employment with Manila Gas Corporation (1930–1941; 1952–1969) and that Manila Gas imported “Ransome” burners as early as 1965 which were advertised through brochures.
Evidence and Testimony Presented by Private Respondent
- Witness for private respondent:
- Rolando Madolaria: General Supervisor of UNITED FOUNDRY in the foundry, machine and buffing sections.
- Testified that UNITED FOUNDRY manufactured various gas stoves and burners from customer sketches and specifications.
- Described early models of single-piece burners (mouth and throat not detachable) and complaints about those models in late 1978.
- Related that Melecia Madolaria instructed him to cast experimental models based on revised sketches and specifications, and that she made innovations which were incorporated into subsequent cast models.
- Stated that tests on the latest model were conducted under Melecia Madolaria’s supervision and produced perfect results.
- Testified that Melecia Madolaria decided to file her application for a utility model patent in December 1979.
- Rolando Madolaria: General Supervisor of UNITED FOUNDRY in the foundry, machine and buffing sections.
Administrative and Appellate Decisions Below
- Director of Patents Decision (Decision No. 86-56 dated July 7, 1986):
- Denied petitioner’s petition for cancellation.
- Held petitioner failed to convincingly establish that respondent’s patented utility model was anticipated.
- Found pictorial representations/brochures did not clearly and convincingly show identity or substantial identity with the patented device.
- Stated undated brochures could not serve as prior art because dates of distribution were not indicated.
- Found no evidence of fraud or misrepresentation in the procurement of the Letters Patent.
- Found Exh. aKa did not show whether manufactured before patent application; Exh. aLa did not bear the word “Ransome”; Exh. aLa and Exh. aMa lacked dates and/or component parts for proper comparison; witness Ong Bun Tua lacked credence regarding imported Ransome burners due to lack of connection to Manila Gas and absence of importation papers.
- Court of Appeals Decision (October 15, 1993):
- Affirmed the Director of Patents’ decision denying cancellation.
- Reiterated and adopted the findings and conclusions of the Director of Patents.
Legal Issues Presented to the Supreme Court
- Whether the Court of Appeals erred in:
- Relying on alleged “imaginary differences” between the patented model and prior models (Esso Standard Eastern, Inc., and Manila Gas Corporation) and basing its finding on speculation, surmise and conjecture.
- Rendering judgment ba