Heelys has filed a lawsuit against Wal-Mart Stores Inc. for making knockoff skates that Heelys claims violate a patent.

According to a complaint filed in Dallas federal court, Wal-Mart sells
a knockoff model called Spinners that violate Heelys patent on a
“multi-wheel heeling apparatus.” Heelys said in the complaint,
“Wal-Mart's infringing acts are causing irreparable harm,” without
“adequate remedy.”

The company, based in Carrollton, TX, is seeking a court order blocking
Wal-Mart from selling products found to violate the patent, and cash
compensation.

“We have not yet read the complaint in detail and it would be
inappropriate to comment until we have,” John Simley, a spokesman for
Wal-Mart, told Bloomberg News. “We take intellectual-property rights very seriously.”