In the weeks since Qualcomm Inc. filed two patent infringement complaints against Apple Inc., several voices have weighed in with support for Apple, including Intel Corp. and the Computer & Communications Industry Association, an advocacy group that represents the likes of Google Inc. and Microsoft Corp.

Two attorneys from organizations that have filed comments said that the decision to get involved was not just about this particular complaint, but was more driven by the desire to voice concerns on the broader implications of Qualcomm's behavior.

Qualcomm filed a complaint with the U.S. International Trade Commission on July 7, alleging that Apple has engaged in unlawful importation and sale of iPhones that infringe on six of its patents. The San Diego-based chipmaker, which filed a parallel action in the U.S. District Court for the Southern District of California, is requesting that the federal agency ultimately bar importation and halt further sales of infringing products in the United States that do not incorporate a Qualcomm brand baseband processor modem.