With over 23 years of professional experience, Mr. Xiang has handled thousands of trademark litigation cases. He has led administrative litigation concerning trademark authorization and confirmation, civil litigation for trademark infringement, civil disputes involving patent infringement, disputes over the right to disseminate audiovisual products via information networks, civil litigation for unfair competition, as well as domain name arbitration cases, among other types of IP cases, totaling over 3,000 cases. He boasts extensive experience in IP litigation, including filing applications for trademark invalidations, trademark oppositions, appeals against trademark rejections, cancellation of registered trademarks based on generic names, administrative reconsiderations of trademarks, as well as trademark applications, changes, transfers, renewals, administrative enforcement actions for trademark infringement, provision of specialized legal opinions, and formulation of specific measures and plans for trademark protection.
The clientele served includes renowned companies such as Nestlé, Estée Lauder, Wyeth, Alibaba, Hsu Fu Chi, Shanghai Mercury Home Textiles, TWG Singapore, Babaka, Deutsche Bahn (DB) Germany, and Reusch Germany.
Mr. Yanming Qin has long been engaged in intellectual property (IP) legal practice, holding dual qualifications as a licensed lawyer and a registered patent attorney. His primary practice areas include IP and civil/commercial cases. Specifically, he has handled hundreds of non-litigation matters such as patent applications, reexaminations and invalidations, as well as hundreds of IP litigation and civil/commercial cases involving patent, copyright, and trademark validation and enforcement. He has provided comprehensive IP services for over 100 enterprises, including IP applications, consulting, strategic planning, technology transfer, rights enforcement, and defense against infringement claims. Representing multiple internationally renowned Fortune 500 companies, he has achieved significant results in rights enforcement and commercial negotiations. He has served globally recognized corporations such as Nestlé (Switzerland), Siemens (Germany), Estée Lauder (USA), Q-Lab Corporation (USA), Shanghai Mercury Home Textile Co., Ltd., and Shanghai Qiyu Company, among other prominent domestic and international enterprises.
Mr. Cheng has nearly two decades of professional experience, during which he has handled over a thousand raid actions involving trademark & patent infringement, as well as counterfeit cases. He specializes in handling litigation related to unfair competition and has received high praise from both domestic and international clients for his work.
The clientele served includes renowned companies such as Nestlé, Estée Lauder, Victoria's Secret, Asahi Kasei (Japan), Alibaba, Reusch Germany, and others
Ms. Han Bao specializes in intellectual property law with particular expertise in trademark matters. She has extensive experience handling trademark administrative proceedings, infringement litigation and unfair competition cases, providing strategic legal counsel throughout. She has provided service for leading Chinese corporations such as Shanghai Mercury Home Textiles Co., Ltd., Midea Group, Aupu Intelligent Technology Co., Ltd., and Beijing Zhenweifang Food Co., Ltd.
Ms. Ling Ren has been dedicated to the intellectual property field since 2022, with extensive experience in both litigation and non-litigation trademark matters. Her non-litigation practice includes domestic and international trademark registrations, modifications, assignments, renewals, trademark review applications and responses, as well as ongoing trademark monitoring. On the litigation side, she handles administrative lawsuits for trademark refusal appeals, cancellation review appeals, invalidations, and civil lawsuits for trademark infringement. Through handling numerous domestic and cross-border trademark cases, she has developed robust expertise in managing diverse trademark legal issues and delivering efficient, professional legal services. Her clients include Jiangsu Changdian Technology Co., Ltd., Guangdong Pharmaceutical Co., Ltd., Dongermen (Beijing) Cultural Creativity Co., Ltd., and Shanxi Medicinal Materials Company, among others.
Ms. Hu boasts 15 years of experience in IP legal services, with extensive expertise in non-litigious trademark matters, trademark procedures, and case management. Besides routine IP legal affairs, Ms. Hu specializes in formulating trademark strategies. She has tailored domestic and international trademark strategies for several leading domestic enterprises, assisting them in establishing brand architecture that aligns with their actual circumstances, achieving standardized trademark management, and mitigating risks. Her strategies are designed to conform to and support the commercial development needs of the businesses. Ms. Hu also has experience handling overseas trademark disputes for domestic companies.
With over a decade of experience in IP brand protection services, Will has accumulated extensive expertise in the precise analysis of specific infringement and counterfeiting cases, providing clients with viable solutions, and effectively halting such illegal activities in a timely manner. Together with his team, he has conducted online and offline anti-infringement and anti-counterfeiting investigations and administrative enforcement actions for several Fortune Global 500 companies, including Nestlé, Blue Bottle Coffee, Victoria's Secret, Estée Lauder, Asahi Kasei, Yoshida Metal, Alibaba, and others. Annually, the team handles over 400 infringement cases for clients.
Ms. Aixia Lyu has been practicing in the patent field since 2009, serving as both a senior patent attorney and mentor at leading IP firms including Liu Shen & Associates in Beijing. Specializing in electrical engineering, telecommunications, and AI technologies, she has extensive experience in patent prosecution, including patent drafting, office action responses, and reexamination proceedings. Her clients include industry leaders such as BOE Technology Group, Lenovo Group Limited, 360 Security Technology, and Megvii Technology, the last of which honored her with an Outstanding Patent Attorney award.
Ms. Linlin He possesses solid technical expertise and extensive professional experience in the telecommunications field and intellectual property industry. She previously worked in the R&D department of a leading Taiwanese company, engaged in system development for communication chips; served as a patent examiner at the China National Intellectual Property Administration; and worked at the Intellectual Property Center of the China Academy of Information and Communications Technology, specializing in IP consulting and judicial appraisal. Her clients include renowned companies such as Huawei, Xiaomi and Datang with consistently outstanding evaluations. Since joining CORNER STONE & PARTNERS, she has been responsible for patent drafting, office action responses, reexaminations, invalidations, litigation and FTO analyses, demonstrating exceptional professional experience.
Mr. Liming Chen has over a decade of experience in intellectual property, with extensive expertise in mechanical engineering, chemistry, chemical engineering, pharmaceuticals and materials science, having prosecuted over a thousand patent cases. Formerly with a leading IP firm and law firm, his practice encompasses patent counseling, patent searches, patent mining, technical translation, patent drafting, office action responses, reexamination proceedings, invalidation actions, and infringement litigation, providing comprehensive legal services to clients. He has managed substantial foreign patent portfolios for clients in Europe, the U.S. and other jurisdictions, as well as domestic patent applications, demonstrating exceptional proficiency in both cross-border and local patent prosecution. The clients he has represented include Nike Innovate C.V., Ford Motor Company, A. Raymond Group (France), Ochaya Patent Office (Japan), various Japanese corporations, Nestlé S.A. (Switzerland), CRRC Corporation Limited, Pangang Group, PetroChina Company Limited, Inspur Group, Dongxu Group, and Hsu Fu Chi International Group.
Ms. Guohui Sun possesses both solid technical expertise in telecommunications and extensive professional experience in intellectual property. She has served as a mobile device testing engineer at a leading smartphone manufacturer, a patent examiner at the China National Intellectual Property Administration, and an IP consultant and judicial appraisal expert at the China Academy of Information and Communications Technology. Since joining CORNER STONE & PARTNERS, she has developed comprehensive expertise in patent drafting, office action responses, reexamination proceedings, invalidation actions, litigation, and FTO analyses. Her clients include Huawei Technologies, ZTE Corporation, Xiaomi Inc., Semiconductor Manufacturing International Corporation (SMIC) and Empyrean Technology.
Mr. Chang Zhang has been engaged in the intellectual property field for many years with over 500 patent applications prosecuted. He specializes in technical fields such as artificial intelligence, information security, databases, computer vision, smart hardware, and medical technology, and is committed to providing clients with high-quality, end-to-end, and customized patent agency services, including new application drafting, office action responses, reexaminations, invalidations, searches, and third-party submissions. The clients he has represented include Ant Group, DiDi Global, Dahua Technology, United Imaging Healthcare, 360 Security, and JIDU Auto.
Ms. Yuhuan Wang has worked in the IP field for many years. Prior to joining us, she worked at some leading domestic IP firms and large transnational companies, having a wealth of experience in serving domestic and foreign clients. As an important member of our trademark team, Ms. Wang is mainly engaged in non-litigious business such as authorization and confirmation of trademark right and she has a good understanding of design patent and copyright registration. Ms. Wang has a solid command of Chinese and English. She is good at acting from the clients’ angle and offering individualized services to them.
Ms. Wei Li possesses robust legal expertise and extensive law firm management experience. As a key assistant to the managing partner, she oversees daily operations including comprehensive case management, progress tracking, document organization, and compliance assurance. Her responsibilities extend to conducting legal research, as well as drafting, preparing, and reviewing legal documents. Demonstrating exceptional organizational abilities, superior coordination skills, and strong teamwork aptitude, she consistently delivers tasks with outstanding efficiency.
Ms.Yucan Liang has worked (or interned) in various legal institutions including courts, procuratorates, law firms, and government departments. She has been deeply involved in civil/commercial cases, criminal cases, and government legal affairs, with key participation in the investigation and prosecution of diverse cases such as theft, unlawful detention, and facilitating prostitution. This experience has endowed her with invaluable practical expertise in criminal law.
Ms. Lihan Yang has over 4 years of experience in the intellectual property field, specializing in patent prosecution support and brand protection. She has effectively combatted infringement activities and safeguarded clients' legal rights by assisting attorneys in infringement investigations and evidence collection. Her expertise includes identifying online infringement leads, gathering evidence, and conducting forensic investigations.
Ms.Tingting Zhou has nearly a decade of experience in international intellectual property (IP) services, having handled hundreds of IP cases including trademark applications, reexaminations, opposition and invalidations. Fully proficient in both English and Chinese as working languages, she has served numerous world-renowned companies and multinational corporations on IP matters. With extensive expertise in authorization & confirmation of trademark rights, copyright protection, and other IP matters, she delivers professional and strategic solutions to her clients.
Ms.Chao Pan has years of experience in the intellectual property field, with extensive experience in handling trademark disputes, including trademark oppositions, cancellations, reexaminations of refused applications, non-registration reexaminations, invalidations, and well-known trademark recognition.
Ms. Shaoping Zeng has been engaged in foreign-related intellectual property (IP) work for over a decade. She has worked with several well-known IP agencies, managing nearly a thousand cases involving trademark applications, reexaminations, oppositions and invalidations. She has provided IP services for multiple Fortune 500 companies and renowned foreign corporations. Fluent in both English and Chinese, she has extensive expertise in trademark, copyright, and other IP matters.
She embarked on the patent/trademark agency in 1993. With a wealth of professional experience, she has handled a large number of applications, reviews, invalidations and administrative proceedings for patents and trademarks.