Katy Perry loses a trademark battle with a fashion designer called Katie Perry

• Pop singer Katy Perry lost a 15-year trademark battle with a clothing designer named Katie Perry.
• The "Teenage Dream" singer partially infringed the trademark of the designer's business.
• "This is a tale of two women, two teenage dreams and one name," the judge said in her ruling.
  
  
  

Katy Perry lost a "David versus Goliath" trademark dispute brought by an Australian designer called Katie Perry, according to multiple reports.