Dental Brasseler has sued a competitor that was once part of the company for trademark infringement.
The lawsuit, filed July 16 in federal court in Delaware, accuses Brasseler USA of infringing a "blue spiral" design trademark used for specialty dental tools.
The German company said the defendant has continued to use the trademark without authorization after it became a separate entity in 2008.
In addition to a court order permanently barring Brasseler USA from using the mark, Dental Brasseler asked for the destruction of all infringing products and promotional materials, together with money damages, attorney fees, and litigation costs.
The exclusive U.S. distributor of Brasseler dental tools is Komet USA, according to the complaint.