Nov 7 (Reuters) - The maker of Stanley-branded insulated

cups sued discount retailer Five Below ( FIVE ) in California

federal court on Thursday for allegedly ripping off the design

of its popular tumblers.

Pacific Market International argued that Five Below's ( FIVE ) cheaply

priced "dupes" of its tumblers violate its trademark rights and

infringe design patents covering drink containers sold under its

Stanley 1913 brand.

Spokespeople for Five Below ( FIVE ) did not immediately respond to a

request for comment on the lawsuit on Friday. PMI said in a

statement that it "take the responsibility of protecting our

intellectual property and the integrity of our brand extremely

seriously" and will "pursue all necessary legal action to

enforce our rights."

PMI's Stanley cups became a sensation on social media in recent

years, propelling the Stanley brand to a tenfold increase in

revenue of $750 million in 2023, according to a CNBC report.

PMI sells its tumblers for between $20 and $50 on its

website. The company's lawsuit said that Philadelphia-based Five

Below ( FIVE ) sells unlawful copies of its Stanley Quencher and other

drink containers for as little as $5.

PMI requested an unspecified amount of monetary damages and

a court order blocking Five Below ( FIVE ) from selling the allegedly

infringing tumblers.

PMI is facing a separate trademark lawsuit from Stanley Black &

Decker ( SWK ) over its use of the Stanley name.

The case is Pacific Market International LLC v. Five Below

Inc ( FIVE ), U.S. District Court for the Northern District of

California, No. 3:25-cv-09604.

For PMI: Sarah Piepmeier, Nathan Sabri and William Rava of

Perkins Coie

For Five Below ( FIVE ): attorney information not yet available

Read more:

Stanley Black & Decker ( SWK ) sues Stanley cup maker over

trademarks

(Reporting by Blake Brittain in Washington)