Ly Duc Long


Ly Duc Long


Practice Focus

Drafting Patent Application Documents、Patent prosecution (including domestic patent application, PCT application and foreign patent application、Patent Reexamination、Patent Invalidation、Patent validity Litigation、Patent Infringement Litigation、Legal Opinion on Patent Infringement、Administrative Protection of Patent Right、Patent Search、Patent portfolio management、FTO Opinion、Third-party Observation/Public Opinion、Patent mining、Patent strategy design、Intellectual property training、Novelty search

IP Litigation and dispute resolution including negotiation, mediation and arbitration、IP protection at trade shows、Infringement risks analysis、IP infringement analysis、IP infringement investigation、IP due diligence investigation、Risk management and damage control、Consulting on IP strategy

Working Experience

Mr. Long’s practice focuses mainly on patent prosecution, patent reexamination, patent invalidation and patent administrative litigation. He has successfully represented many top companies in patent prosecution. He has handled nearly a thousand patent filings and prosecuting cases covering various technical fields, among which many are patent reexamination cases. Mr. Long has drafted many patent applications for clients and filed these patent applications in Vietnam and many countries outside of Vietnam. Mr. Long is also very experienced in representing clients on invalidation or patent administrative litigation cases

Technical Areas

Computer Technology, Automatic Control Engineering, Electronic Technology, and Semiconductor Technology


Vietnamese, English