Prior to joining the firm, Mr. Huang had been engaged in research and development in foreign enterprises like Unilever Research China for nearly 10 years. During 6-year practice, he is adept in patent drafting, office action responding, patent search and analysis, infringement analysis, patent invalidation and patent litigation in the areas of biomacromolecule, genetic engineering, microorganism, medicine, preparations, biological culture/inspection methods, and chemistry.