Chambers & Partners, an authoritative international legal rating agency, launched the Chambers Greater China Region 2024 Legal Guide (hereinafter referred to as the "Chambers Guide"). Ms. Meihua Zhou, chief lawyer of Beijing Yiju Law Firm, has been ranked as a leading lawyer in Intellectual Property litigation and was awarded the title of "Up and Coming Lawyer" with her first-class professional capability, good reputation in the industry, consistent client recognition and outstanding commercial astuteness.

Ms. Meihua Zhou, Director of Beijing Yiju Law Firm and Senior Intellectual Property Specialist, has 13 years of experience intellectual property practice, during which she has won a wide range of reputations in the industry with her outstanding professional products, including  ”The First Batch of Beijing Intellectual Property Service Leading Talents”, Beijing Excellent Patent Attorney "Outstanding Attorney", “China Top 50 Excellent Intellectual Property Lawyers”, “China Top 10 Patent Lawyers”. She was also selected in the lawyer list of "Excellent Intellectual Property Legal Service Brand Guide (2023)" and was awarded "Leading Lawyer Brand Star 2023"  in the field of Intellectual Property by the Lv Xin News.

Ms. Zhou has actively performed her social duties and held a series of social positions, continuously making positive contributions to the development of the industry, including serving as Director of the All-China Patent Agents Association, a member of the second Industry Rights Protection Committee of the Capital Intellectual Property Service Industry Association, an Intellectual Property tutor of innovation and entrepreneurship in Beijing, and an expert consultant of relevant government departments at all levels, such as expert on handling of the national overseas IP disputes, expert on handling of Zhejiang province's overseas IP disputes, an expert in the Shenzhen overseas IP enforcement and assistance expert base, Hangzhou trade secret field expert base, Jinan Intellectual Property Center expert base, Wuxi first Intellectual Property expert base respectively, an expert of Foshan Intellectual Property disputes search and appraisal, an expert of Changsha patent enforcement expert base etc. With her solid professional capability, Ms. Zhou has become an IP judicial appraiser, a part-time mediator, arbitrator, and administrative adjudicator of the People's Mediation Committee of the China Patent Protection Association.

As a research-oriented lawyer, Ms. Zhou has unique and in-depth insights into the patent legal system and handling patent-related disputes. She has been invited by the China National Intellectual Property Administration, and the All-China Federation of Industry and Commerce to participate in expert forums on the Patent Law, the implementation regulations of the Patent Law, Guidelines for Patent Examination, and amendment of the Trademark Law, and contributed suggestions for improvement of the laws. She edited and served as the main contributor and reviewer of the book "The Art of Patent Verification - Interpretation on Patent invalidation proceedings and administrative litigation cases ", which has been published by Intellectual Property Publishing House and widely praised in the industry. Ms. Zhou has published several papers on patent inventiveness, patent infringement judgment and other related topics in the industry journals.

Ms. Zhou has also participated in dozens of patent analysis projects organized by Beijing Municipal Intellectual Property Office, Henan provincial Intellectual Property Office, Suzhou Municipal Intellectual Property Office and other government departments and domestic enterprises. Invited by Beijing Municipal Intellectual Property Office, China Patent Protection Association, Nanjing Municipal Intellectual Property Office, Suzhou Municipal Intellectual Property Office, Soochow University, University of Science and Technology Beijing, Chinese Academy of Sciences, Patsnap and other government agencies, industry associations, universities and industry media, she conducted professional training on patent enforcement knowledge for patent lawyers, patent attorneys, examiners, college students etc. and was widely praised.

Up to now, Ms. Zhou has handled more than 400 patent dispute cases (including personally hosting and supervising). Many of these cases have been selected as classic cases by national judicial and administrative agencies:

• The patent infringement case of  standard-necessary patent "Expansion joint apparatus for ultra large yield resisting comb type bridge" was selected in the "Top 50 Typical Cases of the Supreme People's Court 2022" , this case is one of six patent-related  cases listed in China. In the same year, this case was selected in “Typical Case of the Intellectual Property Tribunal of the Supreme People's Court“ 
• The patent ownership lawsuit of "A magnetic pattern based on magnetoresistance technology to detect the surface of the magnetic head of the magnetic field" was selected in “55 Typical Cases of Intellectual PropertyCourt of the Supreme People's Court 2021”; 
• The patent invalidation caseof "Axial flow wind Wheel" was selected in "CNIPA Top 10 Patent Invalidation Cases 2021";
• On behalf of the patentee, Ms. Zhou successfully defended the patent "Voice coil motor driving liquid lens and lens group thereof" in the patent invalidity request filed by Huawei Technologies Co., LTD., and this case was selected in "CNIPA Top 10 Patent Reexamination and Invalidity Cases 2020";
• The patent infringement disputes case of "Product quality tracing anti-fake system and tracing anti-fake method" was selected in "Beijing Top 10 Typical Cases of Patent Administrative Protection in 2017" and "SIPO Top 10 Typical Cases of Combating Patent infringement and counterfeiting 2017";
• The patent infringement disputes and patent invalidation cases of "Internet access temporary user authorization device and method" were selected in "Beijing Top 10 Typical Cases of Patent Administrative Protection 2017" and "Top 10 Cases of Invalidation and Reexamination by the Patent Reexamination Board 2017";
• Representing COSMX against ATL in a series of patent disputes, involving hundreds of millions RMB yuan, and successfully helping clients to avoid huge losses;
• RepresentingGree against Aux Group in a series of patent invalidation, infringement litigation and administrative litigation disputes which affected a wide range of industries, such as "Motor turns to the mounting base", "PG motor fault automatic detection method" and "Compressor", involving more than 300 million RMB yuan, successfully helping clients to avoid huge losses.
• Representing CALB Group against ATL in a series of patent disputes, and achieved remarkable results;
• Acting for domestic enterprises to invalidate Japan Kubota Co., Ltd. Agricultural’s machinery products patent series disputes, forming a wide impact in the industry；
• Representing the global medical device giant Medtronic in patent invalidation and administrative litigation involving the patents "Device for intravascular Intervention" and "Can remove thrombus device of the combination of the block";
• Acting for Galanz in ten patent invalidation disputes such as "Cathode assembly upper die and die assembly" and "Magnetron anode assembly brazing fixture";
• Representing World Group in the patent infringement litigation of "Cutting platform of combine harvester", "Grain conveying device and combine-harvester with grain conveying device", and helping clients to avoid direct economic losses of nearly 400 million Yuan by invalidating all the asserted patents.
• Representing Kunshan Dongwei Technology in a series of patent infringement litigations, patent invalidation and patent administrative litigation cases, successfully helping clients to clear the market, and the case was awarded "Suzhou Excellent Service Case".
• Acting for Appotronics against Delt, and successfully won the patent infringement litigation and patent invalidation case for "Heat dissipation assembly and projection device with the heat dissipation assembly", involving 48 million yuan;
• Representing clients against BASF in patent infringement proceedings and patent invalidation cases for "Method for producing polymethylols";
• Representing client in patent infringement and patent invalidation cases against Kaisi Medical for "Device for improving blood circulation of lower limb of patients".

Ms.Zhou represents many leading enterprises and Fortune 500 companies, mainly including GREE, CALB Group, COSMX, Yunnan Energy New Material, Meituan, Galanz, FOTILE, TCL, Bear Electric Appliance, Glodon, INSPUR GROUP, State Grid Corporation of China and Kunshan Dongwei Technology, etc.

About Chambers

Chambers and Partners is a leading international legal rating agency, headquartered in London, with operations in more than 70 countries and 200 jurisdictions around the world, has been launching legal service guides to different countries and regions around the world since 1969. The Chambers Guides covers the legal service market in nearly 200 countries and regions worldwide, which, every year, through its rigorous research and assessment system, the global law firms and leading lawyers in various legal fields are ranked in. It is one of the most trusted authoritative references for global clients seeking high-end legal services, and is widely regarded as the benchmark of the industry.

Known for its impartiality and independence, the Chambers Guides applies a uniform assessment standard to all firms and lawyers. This standard is decomposed into seven assessment dimensions, including: Technical legal ability, Professional conduct, Client service, Commercial astuteness, Diligence, Commitment, and other qualities most valued by clients. Only the lawyers leading in all aspects can be ranked in the Chambers Guides.

About Sunshine Intellectual Property Service Group and Yiju Law Firm

Founded in 2000, Sunshine Intellectual Property Service Group is an ecological integration and comprehensive service platform of intellectual property integrating  application, prosecution and verification, consulting and research, litigation and enforcement, operation and investment, strategic planning, innovation project’s assessment etc. in China and abroad for intellectual property rights including patent, trademarks, copyrights, integrated circuit layout design, new varieties of plant etc. Supported by a senior product development and service team, Sunshine provides quality intellectual property services to the society in the whole technology field, and provides worldwide protection for the value proposition of innovative entities.

Sunshine has always been committed to providing high-standard and full range of IP services. Owing to its excellent performance in the field of IP services, it was awarded many honors, including the first batch of "Cultivating Unit of China National Intellectual Property Service Brand Agency", the first batch of " Demonstrative Creating Institution for Intellectual Property Analysis and Review Service", "Outstanding IP Litigation Team of China", AAAAA Patent Agency of Beijing, AAAA Patent Agency of Beijing (AAAA is the highest), and Outstanding IP Service Team of China, Leading Patent Agency of Beijing, IP Service Brand Agency of Beijing etc., 

Beijing Yiju Law Firm has more than 40 patent attorneys at law and full-time IP lawyers with an average of more than 10 years of experience. Having represented more than 3,000 technical IP litigation cases，it was awarded a number of honors, including “Outstanding IP Litigation Team of China”, “China Top 10 IP Litigation Agency Administrative 2018-2019”,“China Top 10 IP Litigation Agency Administrative 2021-2022” etc., and is regarded as the highly reputable IP dispute agency. Nearly 30 cases represented by Yiju are ranked as the national representative cases, including:

• Invalidation dispute case involving the patent " Left atrial appendage occluder" was ranked in the "CNIPA Top 10 Patent Reexamination and Invalidation Cases 2021"；
• Defending the patent "A voice coil motor driving liquid lens and its lens group" in its invalidation dispute case requested by Huawei, which was ranked in the " CNIPA Top 10 Patent Reexamination and Invalidation Cases 2020";
• Representing CSPC in the invalidation dispute case involving the patent "Butylbenzene phthalein cyclodextrin or cyclodextrin derivative clathrate, its preparation method and application", which was ranked in the "CNIPA Top 10 Patent Reexamination and Invalidation Cases 2020".
• Representing Mobike in the invalidation dispute case involving the patent "Internet access temporary user authorization device and method" , which was ranked in the " SIPO Top 10 Patent Reexamination and Invalidation Cases 2017"；
• Representing Sunshine Guojian in the invalidation dispute case involving the patent "Treatment with anti ERBB2 antibodies", which was ranked in the " SIPO Top 10 Patent Reexamination and Invalidation Cases 2014";
• Defending the patent " Substituted oxazolidinones and their use in the field of blood coagulation" in its patent invalidation dispute requested by Bayer, which was ranked in the “CNIPA Top 10 Patent Reexamination and Invalidation Cases 2020";
• Challenging Midea’s invention patent "Axial flow wind wheel" in its invalidation dispute case on behalf of Gree, which was ranked in the " CNIPA Top 10 Patent Reexamination and Invalidation Cases 2021";
• Defending the patent " Methanesulfonic acid salt of niacinamide derivative A crystal and its preparation method and application" in its patent invalidation case requested by HNEGRUI, which was ranked in the "SIPO Top 10 Patent Reexamination and Invalidation Cases 2017";
• Invalidation case of the patent " World No.1 Saber" was ranked in the “SIPO Top 10 Outstanding Patent Reexamination and Invalidation Cases before 2000”;
• Patent infringement litigation involving the standard necessary patent "Bridge expansion joint device" [ (2020)最高法知民终1696号] was ranked in "China National Court 50 Representative Intellectual Property Cases 2022" and " Intellectual Property Division of the Supreme People's Court 20 Representative Intellectual Property Cases 2022";
• Patent infringement administrative investigating and prosecuting proceedings involving the patent "Rivaroxaban", was ranked in "China Court 50 Representative Intellectual Property Cases 2022", " Intellectual Property Division of the Supreme People's Court 20 Representative Intellectual Property Cases 2022", "Abstract of Annual Report on Intellectual Property Cases of the Supreme People's Court (2022)", "Abstract of Abbreviature of Adjudication of the Intellectual Property Division of the Supreme People's Court (2022)", and "Patent Administrative Protection Representative Cases 2022" by CNIPA, "Patent Administrative Protection Representative Cases 2022" by the Jiangsu Provincial Intellectual Property Office;
• Dispute over ownership of the right of the patent "A magnetic pattern based on magnetoresistance technology to detect the surface of the magnetic head of the magnetic field" was ranked in "Intellectual Property Division of the Supreme People's Court 55 Representative Cases 2021";
• Patent infringement litigation involving the patent "Resolution of the enantiomers of amlodipine" was ranked in “the Supreme People's Court Bulletin Cases 2014”;
• Series of patent invalidation disputes and patent infringement litigations involving " The utility model relates to a vertical continuous electroplating device", and "Continuous electroplating transmission system and continuous electroplating system" were ranked in " Suzhou Municipal Intellectual Property Golden Service Cases 2020";
• Patent infringement dispute involving the patent "Anti-counterfeiting traceability system and method" was ranked in "Beijing Top 10 Representative Cases on Patent Administrative Protection 2017";
• Patent infringement dispute involving the patent "Internet access temporary user authorization device and method" was ranked in "Beijing Top 10 Patent Administrative Protection Representative Cases 2017" and "SIPO Top 10 Representative Cases on combating of patent infringement and counterfeiting 2017 ";
• Series of patent infringement litigation cases involving the patents "Pulse flow reaction" and "Method of removing organic sulfur compounds from alkylate" were ranked in "China Court Top 50 Representative Intellectual Property Cases 2016";
• Patent administrative proceedings involving the patent "Medicinal Smilax indica micro pill and its preparing method" was "the first ever IP case went on trial at Beijing Intellectual Property Court" broadcasted by CCTV News.