licensing of intellectual property rights; licensing of technology for electrical and scientific apparatus, namely, central processing units for processing sound, sound boards, sound cards, sound transmitting apparatus, microphones, circuit boards with integrated waveguides, acoustic filters, and active components, circuit boards, printed circuit boards, printed circuit boards providing acoustic and electronic functions, semiconductor devices, semiconductor devices providing acoustic and electronic functions, computer chips, semiconductor chips, integrated circuits; licensing of technology for electrical and scientific apparatus, namely, audio apparatus and instruments, namely, audio circuit boards, amplifiers, headphones, loudspeakers, audio receivers, amplifiers, loudspeakers and components therefor, to manufacturers and producers of such audio apparatus and instruments; licensing of technology for electrical and scientific apparatus, namely, apparatus for recording, transmission or reproduction of sound, to manufacturers and producers of such apparatus for recording, transmission or reproduction of sound; licensing of intellectual property rights, namely, intellectual property rights for audio systems, to manufacturers and producers of such audio systems; licensing of patents, trademarks, copyright, design rights, know-how, trade dress, trade secrets and confidential information; licensing of intellectual property rights, namely, patent portfolios