Additional IP Rights Grant (Patents)"This implementation" means the copyrightable works distributed byGoogle as part of the Go project.Google hereby grants to You a perpetual, worldwide, non-exclusive,no-charge, royalty-free, irrevocable (except as stated in this section)patent license to make, have made, use, offer to sell, sell, import,transfer and otherwise run, modify and propagate the contents of thisimplementation of Go, where such license applies only to those patentclaims, both currently owned or controlled by Google and acquired inthe future, licensable by Google that are necessarily infringed by thisimplementation of Go. This grant does not include claims that would beinfringed only as a consequence of further modification of thisimplementation. If you or your agent or exclusive licensee institute ororder or agree to the institution of patent litigation against anyentity (including a cross-claim or counterclaim in a lawsuit) allegingthat this implementation of Go or any code incorporated within thisimplementation of Go constitutes direct or contributory patentinfringement, or inducement of patent infringement, then any patentrights granted to you under this License for this implementation of Goshall terminate as of the date such litigation is filed.
