A patient unhappy with the results of a hair loss treatment can set up a critical Web site containing the name of the medical institute that treated him, a U.S. appeals court ruled on Monday.

The dispute revolves around Michael Kremer, who was unhappy with the results he obtained from Bosley Medical, which advertises that it has performed more than 180,000 hair transplant treatments since 1974.

“In a bald-faced effort to get even, Kremer started a Web site at http://www.BosleyMedical.com, which, to put it mildly, was uncomplimentary of the Bosley Medical Institute,” Judge Barry Silverman wrote for the U.S. 9th Circuit Court of Appeals.

“The problem is that ‘Bosley Medical’ is the registered trademark of the Bosley Medical Institute, Inc., which brought suit against Kremer for trademark infringement.”

Weighing these issues, the court ruled that a Web site does not infringe trademark if it is not commercial and is used for consumer commentary about the firm.

However the 9th Circuit said a lower court should not have dismissed Bosley’s claims that Kremer was cybersquatting without conducting a more thorough review of the issue.