LexField Law Offices

LexField Law Offices is an established player specialising in IP law. We provide a full spectrum of IP services, including strategy counselling, prosecution, enforcement, litigation and commercial IP matters, covering trademarks, patents, copyright, domain names and competition.

Our professionals have graduated from top-tier Chinese and overseas educational institutions, and many have solid educational backgrounds or industrial experience outside the legal world. This has provided us with the knowledge and insight needed to meet our clients’ evolving demands.

We strive to serve our clients in a commercially sensitive and cost-effective manner. Our clients include prestigious multinationals and Chinese companies across a diverse array of industries, including telecommunications, automotives, information technology, life sciences, consumer products, pharmaceuticals, energy and chemical engineering. They include established and emerging market players. We customise our services in response to the different demands of each client and are proud of the value that we add to our clients’ businesses.

Firm history

The firm was founded in 2004 by Jan Liu, a leading IP attorney in China, under the name Jan Liu & Associates. In 2009 the firm joined forces with a top-calibre litigation and patent prosecution team led by Hongyi Jiang. Since then, the firm has changed its name to LexField Law Offices and provides legal services covering all aspects of the IP world. The firm is based in Beijing.

Firm recognition

The firm enjoys the faith and trust of its clients, which include a number of Fortune 500 companies, meaning that a major way in which we attract new clients is by word of mouth.

LexField’s professionals and practice groups have been recognised by the world’s most respected legal publications (eg, IAM Patent 1000, Chambers & PartnersManaging Intellectual Property, WTR 1000 and Asia IP), receiving top rankings year after year.

Firm strengths

Unrivalled comprehensive trademark practice
The firm’s trademark team, led by Ms Liu, is outstanding in the market for its high-quality service, which ranges from prosecution and strategy counselling to litigation. The team is steeped with experience which allows it to understand the nuance of clients’ businesses and their respective industries.

The trademark team comprises approximately 30 trademark professionals, including attorneys at law and trademark agents. It represents a large number of companies, including large multinational corporations, Fortune 500 companies and rapidly growing companies across diverse industry sectors.

Unsurpassed patent litigation practice

Led by Mr Jiang, many of the litigation cases that the firm has handled have had a widespread impact in China, setting new standards in IP law and establishing LexField as a leader in this area. These successes originate from taking novel legal approaches to an ever-changing world of technology and science.

In November 2018 Mr Jiang represented Qualcomm before the Fuzhou court to secure two preliminary injunctions banning the import and sale of various models of iPhone – a significant win for Qualcomm in its global patent dispute with Apple.

Pharmaceutical patent litigation is one of the most complex practice areas and the LexField litigation team has handled the largest number of pharmaceutical patent litigation cases in China, including many landmark cases.

Our litigation team has won more than 30 IP appellate cases before the Supreme People’s Court – a number unmatched by any other firm. Persuading the Supreme People’s Court to overturn judgments made by provincial higher people’s courts is most challenging in the Chinese legal system. The firm’s record demonstrates that the team clearly has the edge over its competitors.

Sophisticated prosecution and commercial IP practice

Through close interaction with the litigation team, our prosecution and commercial IP team is well equipped to help clients build and exploit their patent portfolios in a cost-effective manner and ensure that these are ready for enforcement. We help clients to identify and mine legally protectable innovations, set up mechanisms to safeguard and commercialise their innovations and prosecute patents that are intended to survive potential challenges and catch copycats. We conduct ourselves as an extension of the client’s R&D, marketing and in-house legal team, and proactively serve as the manager of the client’s IP assets to ensure that its legal fees are a justifiable investment for the enhancement of the IP assets which in turn increase the client’s competitive edge in the market.

Contact details

LexField Law Offices
Suite 1009 China Life Tower
16 Chao Yang Men Wai Street
Chaoyang District
Beijing 100020

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