In 2013, Cioffi along with the daughters of the late Rozman filed a lawsuit against Google in the Federal court in East Texas.
Chrome’s malware protection features violated their patents for a system that stops malware from gaining access to sensitive information on a computer.
A jury found that Google violated the patents in 2017 and granted the complainants a total of 20 million USD.
However, the Federal Circuit declared all of the patents invalid on Tuesday.
The three-judge bench reached a unanimous conclusion that the three claims had been reissued from a previous anti-malware claim.
The new patents described web browser-specific technology that was absent from the original patent.
The defendants in Big Tech’s latest patent litigation argue that bigger firms utilize their clout to squeeze rivals.