These are US Pat. Nos. 8,131,391 and 10,468,047, issued by the United States Patent Office.
One-E-Way is suing Apple, claiming that the iPhone smartphone maker infringed two of its patents. US Patent Nos. 8,131,391 and 10468,047, which describe a “wireless digital music audio system”, are alleged to have been infringed on AirPods, AirPods Pro, HomePod, and Beats.
Apple sued for patent infringement on AirPods, AirPods Pro, HomePod, and Beats
According to the plaintiff, in 2014 Apple was considering licensing patented technology. However, there is no confirmation of this in the lawsuit. But the lawsuit contains correspondence between Apple and One-E-Way, which took place in 2014, from which it is clear that Apple was aware that it was infringing on One-E-Way patents.
The One-E-Way website has a description of several models of wireless headphones and a list of companies that have licensed One-E-Way developments. Among them – Sony, Sennheiser, Creative, Jabra, Imation, and others.