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Mr. Guo joined Unitalen Ministry of Electrical Engineering in 2012，Mr. Guo provides patent service to many famous companies in the areas of telecommunication, computer and internet etc. His skills of patent drafting , OA handling, and accurate analysis of patent invalidation have been highly recognized by clients.

Mr. Guo has rich experience in providing patent training for enterprises. He has trained lots of clients on patent analysis, patent mining, technical disclosure drafting and so on.

Mr. Guo has conducted thorough research on patent mining, patent drafting and OA responding and relevant articles have been published in various topics.