Apple Countersues US Stereo Headphone Inventor Koss in Response to Patent Lawsuit Apple is countersuing Stereophone inventor and audio manufacturer Koss over a patent lawsuit it recently filed in Waco, Texas, accusing Apple and several audio companies of violating patents relating to its wireless headphone technology. In the Koss lawsuit, originally spotted by Patently Apple , AirPods and Beats wireless headphones are accused of violating five patents relating to wireless headphone technology that Koss essentially says it pioneered in the industry. The four patents describe wireless earphones that involve a transceiver circuit, enabling a device to stream audio from a digital audio player, computer, or wireless network. Koss said Apple was aware of these patents and met several times to discuss using them, before deciding not to license any of the company's technology. Koss now wants an unspecified amount in compensation for the alleged infringements, "which by law cannot be less than a reasonable royalty, together with interests and costs." In Apple's filing registered with the U.S.