Lidong DU

Professional Areas:

Attorney DU Lidong, who has the dual qualifications of a Chinese attorney and a patent agent, is up on company law, contract law, Internet law and other relevant dispute resolution laws, and is good at grasping the key to solve problems. Attorney DU has been deeply involved in the field of intellectual property for more than ten years and is familiar with intellectual property laws in countries and regions at home and abroad.

Practice Experience:

Before getting involved in the field of intellectual property protection, Attorney DU Lidong was engaged in scientific and technological research and development in the fields of electricity and communications at Huawei. He has a good technical background and is able to integrate technical and legal issues to solve customer problems. Since practicing, Attorney DU has handled a large number of patent cases for large domestic and foreign companies, including Huawei, ZTE, Panasonic, Sony, Olympus, Sharp, Sumitomo, Fuji Film, dynamic data, etc., accumulating more than 1000 patent basic cases, handling a large number of patent invalidation and litigation cases, and accumulating a wealth of experience.

Typical Case:

1. Patent invalidation case and civil infringement case of "A bottle cap with opening device". In this case, the client lost the first instance and invalidated all the patents involved in the second instance, reversing the failure of the first instance;
2. Design invalidation case of “A splicing board”. Under the strong evidence of invalid claimant, the patent right is maintained;
3. In the case of Samsung's invalidation of Huawei's "multiple access message terminal" and "digital imaging system" patents, represented Huawei Technology Co., Ltd., the patentee, successfully maintained the patent validity;
4. Represented the invalidation requester ZTE Corporation, ZTE successfully invalidated all the other party’s patents in the invalidation case of "intra-frame interleaving" and "autonomous transmission slow MAC-E" series of standard essential patents;
5. Represented Panasonic as the invalidation requester and the third party in patent administrative litigation in a series of patent invalidation and administrative litigation cases against a company in Shenzhen. Individual cases in a series of cases invalidated the counterparty’s patent rights by using disclosure;
6. Represented the software copyright owner Tianbao Company in a series of engineering software copyright infringement cases, successfully achieved evidence preservation in multiple litigations through communication with judges, obtained key evidence, and protected the rights and interests of clients;
7. Represented the software copyright owner Autodesk in a series of software copyright infringement cases, and obtained large compensations to protect the rights and interests of clients;
8. Represented ZTE, the invalid claimant, successfully invalidated all the four patents of Maxwell;
9. Represented Hytera's patent invalidation case against Motorola, successfully safeguarded the rights and interests of clients.