Title
Zuneca Pharmaceutical vs. Natrapharm, Inc.
Case
G.R. No. 211850
Decision Date
Sep 8, 2020
Zuneca's "ZYNAPS" infringed Natrapharm's registered "ZYNAPSE" trademark; court ruled for Natrapharm, citing confusion risk in pharmaceutical use.

Case Digest (G.R. No. 211850)
Expanded Legal Reasoning Model

Facts:

  • Parties and Marks
    • Petitioners: Zuneca Pharmaceutical, Akram Arain, Venus Arain, M.D., and Style of Zuneca Pharmaceutical—importers and marketers of generic drugs since 1999. Among these is carbamazepine marketed under the brand name “ZYNAPS” (anti-convulsant). Zuneca obtained a Bureau of Food and Drugs (BFAD, now FDA) Certificate of Product Registration (CPR) on April 15, 2003 and began selling in 2004.
    • Respondent: Natrapharm, Inc.—domestic manufacturer, marketer, and distributor of pharmaceutical products. It registered citicoline under the mark “ZYNAPSE” with the Intellectual Property Office (IPO) on September 24, 2007 (Certificate No. 4-2007-005596).
  • Trial Court Proceedings (RTC Quezon City, Branch 93, Q-07-61561)
    • Natrapharm filed for injunction, trademark infringement, damages (₱2M actual, ₱5M exemplary), attorney’s fees (₱300K), and destruction of infringing goods. Sought TRO/prelim injunction.
    • Zuneca counterclaimed: asserted prior use of “ZYNAPS” since 2004, alleged Natrapharm’s bad-faith registration, and prayed for cancellation of “ZYNAPSE” registration, injunction, destruction of goods, and damages.
    • RTC Decision (Dec 2, 2011): Held Natrapharm as first in good-faith registrant; rendered judgment for Natrapharm—₱1M damages, ₱1M exemplary damages, ₱200K attorney’s fees; enjoined Zuneca from using “ZYNAPS” and ordered disposal/destruction of infringing materials; dismissed Zuneca’s counterclaims.
  • Court of Appeals Proceedings (CA-G.R. CV 99787)
    • Zuneca appealed denial of counterclaims and imposition of remedies.
    • CA Decision (Oct 3, 2013): Affirmed RTC—registration, not prior use, acquires trademark ownership; good faith presumed in IPO registration; Zuneca failed to prove bad faith. CA denied motions for reconsideration on March 19, 2014.
  • Supreme Court (En Banc, G.R. No. 211850, Sep 8, 2020)
    • Petition for review under Rule 45 with prayer for TRO/prelim injunct ion.
    • Central controversy: confusing similarity of “ZYNAPS” and “ZYNAPSE” (admitted by both parties) and the competing theories on trademark ownership (first-to-file vs. first-to-use).

Issues:

  • Trademark Ownership Acquisition
    • Is ownership acquired exclusively by registration (first-to-file), or can prior use (first-to-use) vest ownership?
  • Rights of First Registrant vs. Prior User
    • May Natrapharm, as first-to-file registrant, prevent Zuneca’s continued use of the confusingly similar “ZYNAPS”?
  • Good Faith in Registration
    • Did Natrapharm register “ZYNAPSE” in good faith?
  • Trademark Infringement Liability
    • Is Zuneca liable for infringement under IP Code Sections 155–157, warranting damages, injunction, and destruction of infringing goods?
  • Validity of Counterclaims
    • Was the dismissal of Zuneca’s counterclaims for cancellation and other relief correct?
  • Section 159.1 (Prior User Exemption)
    • Does Section 159.1 exempt a prior user in good faith from infringement liability even after another party’s registration?

Ruling:

  • (Subscriber-Only)

Ratio:

  • (Subscriber-Only)

Doctrine:

  • (Subscriber-Only)

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