Work experience

Shanghai Yuan Law Firm

Practice Characteristics or Major Cases

Mr. Qian Chenglong is a dual licensed attorney + patent agent practitioner with a composite background in technology, engineering and law:

- Relying on his computer expertise, he has provided in-depth services to software and Internet companies, and is good at dismantling complex cases such as data compliance and intellectual property rights (software copyright/technology patents) with a technical mindset, and is now the permanent legal advisor to a number of science and technology companies;

- Having served as branch manager of a large state-owned construction company, he has accumulated rich experience in project management, and has mature litigation and non-litigation capabilities in the whole process of risk control and dispute resolution in construction project disputes.

Qualifications and Certificates

practising certificate for lawyers

Patent Attorney Certificate

Certificate of National Registered First Class Constructor

working language

Chinese, English

Related articles

Ten Years of Defending Rights and Keeping the Beginning Heart, Criminal Responsibility and Protecting Innovation｜Tang Feng's team of lawyers from Yuan Ze Law Office successfully handled the semiconductor intellectual property criminal benchmark case, and was awarded the flag of thanks by Mr. Huang and Mr. Fan, the general manager of Xinmao Semiconductor!

Recently, Mr. Huang and Mr. Fan of Shanghai Xinmao Semiconductor Co., Ltd. came to Shanghai Yuanfa Law Firm, and sent a silk banner with “Defending Intellectual Property Rights, Professional Escort, Guardian of Innovative Achievements, Doing Your Best” to Mr. Tang Feng and his team to express their sincere gratitude for the continuous, professional and powerful legal service of IPR defense over the years. The banner is not only a token of appreciation to Tang Feng and his team. This banner is not only a recognition of the case win, but also a recognition of the source of the law firm for more than ten years accompanied by the defense of rights, from civil combat to criminal prosecution, and consistently guarding the core technology of the enterprise....

Honors | Shanghai Yuanfa Law Firm obtains the qualification of patent agency, and the whole chain of intellectual property rights is escorted by double certificates!

Recently, after strict examination and approval by the State Intellectual Property Office, Shanghai Yuanlaw Law Firm officially obtained the qualification of patent agency, and successfully joined the ranks of professional legal service organizations with the dual qualification of patent agency and trademark agency, which marks that Yuanlaw Firm realizes the whole chain layout in the field of intellectual property legal services, and the ability of professional services has stepped up to a new level! Currently, Primary Law has a number of patent attorneys, who will work together to provide customers with high-quality, specialized patent legal services. In the future, Yuanlaw Firm will take this double qualification as an opportunity to continue to increase...

Yuanfa Honors | Mr. Tang Feng won the Award of Excellence in the 2025 Minhang District Lawyer Practice Skills Competition!

On the afternoon of December 12, 2025, the 2025 Minhang District Lawyer Practice Skills Competition, co-sponsored by the Minhang District Judicial Bureau, the Minhang District Lawyer Industry Party Committee and the Minhang Lawyer Working Committee, came to a successful conclusion. By virtue of his solid professional skills, outstanding performance and excellent practice quality, Mr. Tang Feng of the Law Firm stood out among many outstanding peers and won the “Award of Excellence in 2025 Minhang District Lawyer Practice Skills Competition‘. (Picture shows 9th from the left, Mr. Tang Feng) ,

Source Law News | From the venue of the Association to the site of the Firm: Director Tang Feng participated in the meeting to offer advice, small and medium-sized firms Working Committee Director Zhou Jigao and other parties to visit the guidance!

On November 7, Shanghai Lawyers Association organized and held a seminar on "Risk Alert Manual (Draft)", focusing on the development path of small and medium-sized law firms, compliance management and risk prevention and control and other key issues. Mr. Tang Feng, director of Shanghai Yuanfa Law Firm, was invited to participate in the meeting as a representative to discuss the cutting-edge issues of the industry with experts in the industry, and offer suggestions for the high-quality development of small and medium-sized law firms. The meeting centered on the common risks faced by small and medium-sized law firms in the process of practice to carry out in-depth discussions, aimed at the development of a more targeted risk reminder manual to help law firms to...