Case Digest (G.R. No. 113388)
Facts:
In Angelita Manzano vs. Court of Appeals and Melecia Madolaria, petitioner Angelita Manzano filed on February 19, 1982 with the Philippine Patent Office an action to cancel Letters Patent No. UM-4609, granted July 22, 1981 to respondent Melecia Madolaria for an LPG gas burner, later assigned to New United Foundry and Manufacturing Corporation. Manzano alleged lack of novelty, non-compliance with Section 14 of RA 165 (as amended), false inventorship, and procurement by fraud. She claimed prior art in the form of brochures from Manila Gas Corporation and Esso Gasul depicting “Ransome” burners, production of similar burners by her husband’s foundry (BESCO METAL) in 1974-1975, and an imported burner cup, supported by affidavits and testimony of Ong Bun Tua and Fidel Francisco. Respondent presented Rolando Madolaria, who testified to her developmental sketches, experimental castings in 1978–1979, and successful tests leading to the December 1979 patent application. On July 7, 1986 t
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Case Digest (G.R. No. 113388)
Facts:
- Parties and Patent
- Petitioner Angelita Manzano filed on 19 February 1982 with the Philippine Patent Office a petition to cancel Letters Patent No. UM-4609 for an LPG gas burner, originally issued on 22 July 1981 in favor of respondent Melecia Madolaria (later assignor to New United Foundry Manufacturing Corporation).
- Petitioner alleged lack of novelty, utility, compliance with statutory specification requirements, wrongful inventorship, and fraud in obtaining the patent.
- Evidence Offered by Petitioner
- Prior‐art brochures from Manila Gas Corporation and Esso Standard Eastern, Inc. (Exhs. “aD,” “aE”), and an affidavit alleging prior use (Exh. “aA”).
- Physical models: a burner model allegedly from UNITED FOUNDRY (Exh. “aK”), petitioner’s “Ransome” burner (Exh. “aL”), and an imported burner cup (Exh. “aM”).
- Witness testimony:
- Petitioner’s husband Ong Bun Tua—helper at UNITED FOUNDRY (1965–1970) who aided in casting a burner with the patented configuration and later formed BESCO METAL.
- Fidel Francisco—former supervisor at Manila Gas Corporation, testified to importation of “Ransome” burners in the 1960’s.
- Evidence Offered by Respondent
- Rolando Madolaria—General Supervisor of UNITED FOUNDRY, testified to development of early burner models, respondent’s experimental revisions in 1978–1979, resulting in the patented utility model, tested under respondent’s supervision, and the filing of her patent application in December 1979.
- Proceedings Below
- Director of Patents (Decision No. 86-56, 7 July 1986) denied cancellation for failure to prove anticipation, invention identity, inventorship fraud, or non-compliance.
- Court of Appeals (15 October 1993) affirmed the Director’s decision.
- Petitioner elevated the case to the Supreme Court via petition for review on certiorari.
Issues:
- Novelty and Anticipation
- Whether petitioner presented clear and convincing evidence that the patented utility model was known, used, or sold in the Philippines more than one year prior to the patent application.
- Whether the brochures and models introduced by petitioner anticipate the patented device as identical or substantially identical prior art.
- Inventorship and Fraud
- Whether Melecia Madolaria was the original and first inventor or derived rights from the true inventor.
- Whether the patent was procured by fraud or misrepresentation, i.e., withholding material facts from the Patent Office.
- Compliance with Statutory Requirements
- Whether the patent specification complied with Section 14 of RA No. 165, as amended.
Ruling:
- (Subscriber-Only)
Ratio:
- (Subscriber-Only)
Doctrine:
- (Subscriber-Only)