> There is no implied patent license in GPLv2. Claiming the GPLv2 has a patent license is wishful thinking.
Not only does the FSF disagree with you, as rahulsundaram points out above, but so did an independent legal firm (Fenwick & West LLP), who concluded that: "...it is reasonable to conclude that the implied license defense is available and tenable for a defendant in a patent suit involving software released under the GPL [v2.0]".