In-house counsel from five companies, Qualcomm Inc., IBM Corp., Nokia Corp., InterDigital Inc. and The Clearing House Payments Co. LLC, weighed in on proposed changes to patent eligibility at a Senate hearing Tuesday.

It was the final hearing in a Senate Judiciary Committee’s Subcommittee on Intellectual Property series on ”The State of Patent Eligibility in America,” sparked by a draft bill released in May that aims to clarify patent eligibility law and provide greater assurances for U.S. innovators that their inventions will be protected without fueling opportunities for patent trolls.