Since its formation, HIMPP has acquired approx. 100 patent families totalling more than 400 national patents all over the world. Some of those patents have now expired or been abandoned.
Initially, the portfolio consisted of 32 patent families comprising well over 150 national patents and patent applications directed towards programmable hearing instruments, digital hearing instruments, computer programming of hearing instruments and advanced fitting strategies.
Later, HIMPP has acquired 15 patent families from Decibel Instruments, 10 patents families from NEC Corporation, 23 families from Songbird Hearing, Inc, 2 patent families from Avaya Inc., and 4 patent families from HEI, Inc. (Hybrid Electronics).
Most recently, HIMPP has acquired 12 patent families from On Semiconductor, 2 patent families from AT&T and 1 patent family from Ruwisch.