Yan Tan
Patent attorney/trademark attorney/lawyer
Expertise: Mining, layout and application of patent, rejection of reexamination, invalidation declaration and defense, patent search, infringement analysis etc.; layout, trademark registration application, rejection of review, objection and defense, invalidation and defense of trademark, trademark revocation and defense etc.; copyright registration; civil and administrative litigation of intellectual property
（+86）10 68056830
（+86）10 68586808
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