When Auckland's landmark Tepid Baths reopen after a refit next month, the Auckland Council may not be able to refer to them as the Teps.
The council is locked in a legal stoush with a former operator of the indoor pools, John Fay, over use of the term "The Teps".
Both parties are claiming rights to it, but the row does not stop Aucklanders calling the baths the Teps, as they have done for decades.
Mr Fay claims to have established "The Teps" as a trademark around 1986. The council claims to have registered "The Teps" in 1999.
Mr Fay's company, Auckland Tepid Baths, has applied to the Trade Marks Commission to have the council's trademark registration for "The Teps" struck out.