Chief Lawyer Xu Xinming

+86-13910160652 ciplawyers@163.com

About Us Consultation

Working Progress

more >

Chief lawyer Xu Xinming has been selected for the Beijing Lawyers Association's Foreign-Related Lawyer Talent Pool
Final Judgment: Represented by Xu Xinming's Team，FUHUMAN Wins Invention Patent Invalidation Case Against Japan Central Ekotek Co., Ltd.
Forging Sword for Seven Years: Won the Case of the Dispute over Invalidation of the Invention Patent of Yee Fung Handled By Lawyer Xu Xinming
Xu Xinming: Can the Trademark Right of Zhengongfu Beat Bruce Lee’s Portrait Right?
Lasted for Eight Years: Won the Case Concerning the Administrative Dispute over Invalidation of the Invention Patent of Elecon Handled by Lawyer Xu Xinming

IP Express

more >

Judicial Development

more >

CASE

more >

IP Theory

more >

IP Practice&View

more >

U.S. Supreme Court Declines to Review AI-Generated Work Copyright Case, Solidifying "Human Authorship" as a Statutory Requirement

03-06 2026

legal System

more >

Chinese Law Library

International Law Library

Return to List

Home > About Us > Some Classic Cases > Patent

Beijing Hengdong Technology Co., Ltd v. Sichuan Huadelaisi Oil Equipment Inc. requesting to declare “A long-term wear-resisting drill collar ” utility

Post time：01-10 2018

font-size: +-

563

Beijing Hengdong Technology Co., Ltd v. Sichuan Huadelaisi Oil Equipment Inc. requesting to declare “A long-term wear-resisting drill collar ” utility model patent invalid

Previous Next Next

Chief Lawyer Xu Xinming

Working Progress

IP Express

Judicial Development

CASE

South Korea's Supreme Court: "Altering" Luxury Bags for Personal Use Does Not Constitute Trademark Infringement

Singapore deepens crackdown on digital piracy with fourth Sim Lim Square sentencing

Second-Instance Judgment Reversed in Sino-Australian Medical Device Enterprises’ UCM Brand Unfair Competition Case

IP Theory

IP Practice&View

U.S. Supreme Court Declines to Review AI-Generated Work Copyright Case, Solidifying "Human Authorship" as a Statutory Requirement

legal System

Chinese Law Library

International Law Library

Beijing Hengdong Technology Co., Ltd v. Sichuan Huadelaisi Oil Equipment Inc. requesting to declare “A long-term wear-resisting drill collar ” utility

Relate Articles

Jinan Derman Science Technology Co., Ltd. v. Wu Xiong & Wang Zhen requesting to declare “Stent Conveyor” utility model patent invalid

Chief Lawyer Xu Xinming successfully wins the patent invalidation case relating to the patent for “a long-acting wear drill collar”

Chief Lawyer Xu Xinming successfully wins the patent invalidation case relating to the patent for “a long-acting wear drill collar”

Teng Lianzhi v. Qinhuangdao Tonghai Technology Development Co., Ltd. of requesting to declare "A Machine That Makes Fried and Deoiling in Vacuum "util

Ningbo Haifei Electric Appliance Co., Ltd. v. Gong Yinqi requesting to declare "A Washing Machine 's Shell " utility model patent invalid and patent i

Comment