About

​About
Established in 2015, Beijing Sunshine IP Law Firm is a high-level, specialized Chinese law firm organized in corporate system, with its headquarters in Zhongguancun, Beijing.

Sunshine IP Law Firm adheres to the core values of "rigorousness, practicability, integrity and concentration", and is committed to providing specialized legal services and risk control solutions for corporate clients to the extreme.

Since its establishment, Sunshine IP Law Firm has been constantly deepening and expanding its coverage of legal services, and has gradually formed a business development pattern of "professionalism prioritized, supplemented by comprehensiveness", with corporate legal advisory services, investment and mergers and acquisitions, real estate and construction projects, finance, securities and capital markets, foreign investment, international trade and intellectual property as the core, and has been assisting clients to control their business legal risks and achieve their business goals in an all-round, multi-level and integrated way.

Sunshine IP Law Firm's partner lawyers and senior lawyers all graduated from famous law schools at home and abroad, such as China University of Political Science and Law, Peking University, Tsinghua University, Renmin University of China and Institute of Law of Chinese Academy of Social Sciences. Sunshine IP Law Firm's founding partners and senior partners are mostly drawn from top law firms in China, with rich practice experience, international outlook, reliable professionalism and profound social resources. At present, Sunshine IP Law Firm has a specialized legal service team consisting of experts with their own strengths and complementary advantages, which ensures the maximization of clients' interests with rich industry experience, acute judgment, solid legal knowledge and satisfactory professional ethics.

In addition, Sunshine IP Law Firm has also engaged senior experts, scholars, professors and professionals in various fields as consultants to ensure the continuous enrichment, stability, expansion and development of Sunshine IP Law Firm's expert team.

In order to continuously improve the specialized skills and service level of the business team, Sunshine IP Law Firm adopts a work mode featuring both rigorous specialization-based labor division and team collaboration, and manage cases/projects with the integrated management system dedicated for law firms with international leading level, therefore ensuring that the project team implements strict, standardized and systematic operation procedures and management system and supervision mechanism for each and every case/project all the way through case search upon acceptance, conflict of interest verification, commissioned examination, to staff allocation, handling and coordination, tracking and feedback, and that special personnel are designated to be responsible. Sunshine IP Law Firm takes on the responsibility of providing specialized and high-quality legal services to our clients, and firmly believes that "whether the interests of our clients are maintained to the greatest extent" is the sole criterion to assess the work performance of each and every employee of Sunshine IP Law Firm.
​IP Disputes
4000
Litigation Success Rate
80
​Nat'l Leading Cases
30
IP Attorneys
40
Culture
Mission
Vision
Core Values
Mission

Empowering Innovation Without Borders

We eliminate intellectual property (IP) risks for innovators worldwide. From strategic patent portfolios to proactive trademark protection and ironclad trade secret management, we deliver turnkey solutions so businesses can focus on R&D and global expansion.
Vision

To Be the Most Respected IP Law Firm

Earn trust via high-quality, efficient, value-added IP services
Gain peers' respect through professional rigor and industry leadership
Build societal recognition via ethical practice and social responsibility commitments
Core Values

Responsiblility | Reliability | Teamwork | Innovation

​Integrity & Empathy | Respect laws, serve clients genuinely, care for partners
​Ethics-Driven Innovation | Balance compliance with groundbreaking strategies
​Collaborative Excellence | Achieve goals through transparent communication and teamwork
​Future-Focused Innovation | Continuously evolve services, tech, and operations
Honors
01

LegalNews 2024 Benchmark Cases (Representative Case)

2025
02

Recommended Patent Invalidation Litigation Service Provider (2024)

2024
03

​Patent Invalidation Litigation Service Providers (2023)

2023
04

​LegalNews 2023 Most Influential IP Law Firm

2023
05

LegalNews 2023 Premium IP Legal Services Guide

2023
06

★★★ ​CIPSA/T0001-2022 (3-Star IP Service Provider Certification)

2022
07

China Outstanding IP Agencies – Patent Administrative Rankings

2021
08

China IP Litigation Agencies – Administrative Rankings

2019
09

​China Outstanding IP Litigation Team

2014
Milestones
2015
2015

Nov. 2015 Sunshine IP Law Firm established (formerly Yiju Law Firm)

2020
2020

Published book:Strategies for Patent Validity Defense and Challenge

2024
2024

Selected in the "100 Typical Cases of the Supreme People’s Court Intellectual Property Tribunal (5th Anniversary)"
High-Tower Granulation patent invalidation case (previously invalidated 13 times)
Included in the Beijing Intellectual Property Court’s Case Analysis of Patent Validity and Authorization Trials (2014-2024)

2025
2025

Feb. 2025 Renamed from Yiju Law Firm to Sanju Law Firm

2015
2020
2024
2025
CSR
Lectures
Lectures
Meihua Zhou was invited to give a lecture on intellectual property rights for enterprise IPOs to postgraduate students at China University of Political Science and Law.
Donations
Donations
Sunshine IP Law Firm donated 100,000 yuan to Dongfa Village in Fuyuan City to support the village's poverty alleviation efforts.