When Christina and Patrick Vitagliano dreamed up their Monster Mini Golf franchises -- 18-hole, indoor putting greens straddled by glow-in-the-dark statues of ghouls and gargoyles -- they never imagined that a California maker of high-end audio cables would object.

But Monster Cable Products Inc., which holds more than 70 trademarks on the word monster, challenged the Vitaglianos' trademark applications. It filed a federal lawsuit against their company in California and demanded the Rhode Island couple surrender the name and pay at least $80,000 for the right to use it.

"It really seemed absurd," says Ms. Vitagliano.

The legal actions were nothing new for Monster Cable, which was granted its first "Monster" trademark in 1980. Since then, the company has fought more monsters than Godzilla did.

Over the years, it has gone after purveyors of monster-branded auto transmissions, slot machines, glue, carpet-cleaning machines and an energy drink, as well as a woman who sells "Junk Food Monster" kids' T-shirts that promote good eating habits. It sued Monster.com over the job-hunting Web site's name and Walt Disney Co. over products tied to the film "Monsters Inc." It opposed the Boston Red Sox trademark applications for seats and hot dogs named for the Green Monster, the legendary left-field wall in Fenway Park. All in all, Monster Cable says it has fought about 190 monster battles at the U.S. Patent and Trademark Office and filed around 30 monster lawsuits in federal courts.