The shares had crashed after a courtroom reverse but gained 4½p to 300p after the company said it had filed new patent lawsuits against its rivals.

Proponents of the bill suggested that technology companies are subject to an unprecedented wave of patent lawsuits, stifling innovation and creating an overburdened and lethargic patent system.

Other patent lawsuits were not always successful.

This bill, if passed into law, will shift costs and fees to plaintiffs in computer-related patent lawsuits that are not reasonably likely of succeeding when filed.