Columbia Sportswear has been awarded more than US$3m in damages for infringement of one of its Omni-Heat reflective technology design patents.

The US-based sportswear company sued Seirus Innovative Accessories back in 2013, when it alleged the company's HeatWave gloves were made using heat-reflecting material and a similar ornamental design to those sold by Columbia. 

In 2016 it won a ruling against Seirus for copyright infringement. 

Columbia wins latest round in heat reflective lawsuit

On 29 September a jury in the federal district court of San Diego awarded US$3.018m in damages to Columbia Sportswear, the amount representing Seirus's total profits from the sale of its HeatWave products.

Columbia is also entitled to prejudgment interest and to seek the profits that retailers earned through their sales of the infringing products. However, the court rulings are also subject to appeal.

"We are very pleased that Seirus has been held accountable for infringing our design patent," said Peter Bragdon, Columbia's executive vice president and general counsel.

"Seirus continued to promote and sell its infringing Heatwave products even after Judge Hernandez ruled in August 2016 that the products infringed Columbia's US design patent, unfairly profiting from Columbia's innovations. We believe all our innovative products provide superior performance and we will continue to aggressively pursue infringing products."

The jury also found that two claims of one of Columbia's US Omni-Heat utility patents are invalid. Bragdon said the company would seek to overturn the partial invalidation of one of these.

In its response to just-style, Seirus said the jury found it owed money for infringement of a design patent relating to an old Seirus design.

It also said the jury returned a verdict finding Columbia's patent covering its Omni-Heat technology invalid, and also refused to find that Seirus' HeatWave technology infringed Columbia's patent.