Z:gnu-www-ja-gplv3-the-program--1e83a3-Nonetheless, as explained in t/en

Nonetheless, as explained in the Rationale for Draft 3, such broad retaliation was criticized because it could apply to software patent lawsuits in which the accused software was unrelated to the software that was the subject of the license. Seeing that there were no widely used licenses with which this would provide compatibility, in draft 3 we dropped broad patent retaliation from the range of GPL compatibility.