In a cross-border trademark dispute that pits Major League Baseball against an independent Canadian league team, the St. Louis Cardinals have formally opposed three trademark applications filed by the Hamilton Cardinals of the Canadian Baseball League (CBL). The filings, submitted on March 7, 2023, to the Canadian Intellectual Property Office (CIPO), consist of two design-concept trademarks (including one featuring the team’s updated logo) and one standard-character mark for the name “Hamilton Cardinals.”
The opposition, filed by St. Louis Cardinals LLC in spring 2025 (with a detailed statement dated June 2025 for at least one application), argues that the Hamilton team’s efforts represent an attempt to “take advantage of the reputation and goodwill associated with the [St. Louis Cardinals’] Trademarks” and could deceive Canadian consumers into believing the two organizations are affiliated. St. Louis contends the applications were made with “full knowledge and disregard” of its long-standing rights in the “Cardinals” name, which the MLB club has used for over a century and which extends into Canada through its international fame in baseball operations, apparel, merchandise, and entertainment services.
The St. Louis statement further highlights what it calls a pattern of bad-faith behavior. It points to the Hamilton Cardinals’ 2012 rebranding from the Thunderbirds back to “Cardinals”—occurring shortly after the St. Louis team’s 2011 World Series victory—as an intentional move to capitalize on the MLB club’s success. A quote from a former Hamilton co-owner, Drew Brady, is cited: “[W]e’re riding on the coattails of the St. Louis Cardinals winning the World Series.”
The Hamilton Cardinals’ new primary logo, unveiled ahead of the 2023 season, features a modernized red cardinal bird holding a bat designed with a “hammer” weight— a nod to Hamilton’s nickname as the “Hammer” and its steel-town heritage. The team’s color scheme incorporates black and red. Hamilton owner Eric Spearin has pushed back strongly, calling the opposition “a big shock” and insisting the logos and branding are distinctly different. “Our logo looks nothing like theirs,” he told reporters. Spearin added that the teams operate in entirely separate leagues and have co-existed peacefully in the past, including sharing Bernie Arbour Stadium in the late 1980s and early 1990s when St. Louis maintained a minor-league affiliate in Hamilton.
The Hamilton Cardinals have used variations of the “Cardinals” name since at least the 1960s (with gaps), most recently reclaiming it in 2012 after a six-year run as the Thunderbirds. Under Spearin’s majority ownership since 2022, the organization has focused on refreshing its brand and building community ties with local youth baseball programs. The team plays in the independent CBL, drawing record attendance in a 3,000-seat stadium and preparing for a 48-game 2026 season that opens at home on May 15 against the Kitchener Panthers.
In an official statement, the Hamilton Cardinals expressed confidence in their position: “We remain confident in our position and are committed to protecting the legacy, identity, and community presence built over decades. This reflects the pride and resilience of Hamilton, a city known for standing strong and fighting for what matters. We intend to continue operating under the Hamilton Cardinals name and remain committed to our unique Cardinals logo.”
Trademark law experts note that such oppositions are common when marks could be deemed confusingly similar, even across different levels of professional sports. The Canadian Trademarks Database currently lists the applications under opposition, with St. Louis having until June 26, 2026, to submit additional evidence.
For now, the Hamilton Cardinals plan to take the field this season under their established name and branding while the legal process unfolds. The dispute underscores the complexities of protecting iconic sports brands in an era when even small-market independent teams seek formal trademark protection for merchandise, apparel, and fan engagement. Both sides appear prepared for a prolonged fight, but Hamilton insists it will not back down from a name and identity it has called its own for decades.
