| 1 | Additional IP Rights Grant (Patents)
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| 2 |
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| 3 | "This implementation" means the copyrightable works distributed by
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| 4 | Google as part of the Go project.
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| 5 |
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| 6 | Google hereby grants to You a perpetual, worldwide, non-exclusive,
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| 7 | no-charge, royalty-free, irrevocable (except as stated in this section)
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| 8 | patent license to make, have made, use, offer to sell, sell, import,
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| 9 | transfer and otherwise run, modify and propagate the contents of this
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| 10 | implementation of Go, where such license applies only to those patent
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| 11 | claims, both currently owned or controlled by Google and acquired in
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| 12 | the future, licensable by Google that are necessarily infringed by this
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| 13 | implementation of Go. This grant does not include claims that would be
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| 14 | infringed only as a consequence of further modification of this
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| 15 | implementation. If you or your agent or exclusive licensee institute or
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| 16 | order or agree to the institution of patent litigation against any
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| 17 | entity (including a cross-claim or counterclaim in a lawsuit) alleging
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| 18 | that this implementation of Go or any code incorporated within this
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| 19 | implementation of Go constitutes direct or contributory patent
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| 20 | infringement, or inducement of patent infringement, then any patent
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| 21 | rights granted to you under this License for this implementation of Go
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| 22 | shall terminate as of the date such litigation is filed.
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