Men's apparel maker Bagir Co Ltd has laid claim to the patent on machine washable business suits, rejecting similar technological advances by an Australian apparel company.

The Tel Aviv-based firm said it launched a washable polyester-wool suit more than two years ago and has sold 500,000 units in the UK alone through Marks & Spencer.

The company said plans by Australian Wool Innovation, which launched a similar product to the domestic market in August this year, to enter the US market were an infringement on its rights.

"We will not allow anyone to infringe upon our intellectual property rights," Bagir CEO Offer Gilboa said.

"We invest huge amounts of money in order to position Bagir as a worldwide leader in terms of technology and innovation, and we are determined to protect our rights.

"The patent has already been granted in the UK, and is now pending in the USPTO and EPO."

Gilboa said Bagir's US expansion would include supplying suits to major department store chain JC Penney under its Stafford brand.

He added that this was not the first time that so-called "fake products" had been detected by the company.

"Usually (other washable suits) don't meet the standards and after a few washings you would not put it on the back of a horse," he said.