Nike patent filings with the European Patent Office in Munich represented 77 percent of all the requests for registration filed by the main sports companies in the ten years between 2010 and 2020, according to a study reported in Die Welt. This compares with 15 percent of the filings for Adidas, 5 percent for Puma, 2 percent for Asics and 1 percent for Reebok. Not all of Nike's filings have been accepted, an Adidas spokesman commented, adding that his company prefers to file for registration only when it is pretty sure that it will go through.