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Business Area
Reexamination and Invalidation Services
1、Patent Reexamination
2、Patent Invalidation
3、Trademark Reexamination
4、Trademark Opposition and Revocation
联系电话：010-62139681（总机）/010-62171584/ 010-57157622
传真：010-62139684转802
京ICP备16031517号-1
技术支持：华大网络
