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​​Intellectual Property​

Beijing Sunshine IP Law Firm, established in 2015, is a high-end, specialized, and corporate-structured Chinese law firm headquartered in Beijing’s Zhongguancun. Guided by its core values of "rigorous, pragmatic, principled, and focused," the firm provides professional legal services and risk control solutions for corporate clients.

With extensive experience and an expert team across all intellectual property domains, we deliver strategic legal counsel to maximize the value of clients’ intellectual assets from concept development to commercialization and protection. At the forefront of market and legal developments, clients rely on our cutting-edge technical expertise and integrated IP services covering management, consulting, and litigation to tackle their most complex challenges.

Service

​​Patent Litigation Services​

Patent Reexamination Administrative Litigation

Patent Invalidation Administrative Litigation

Patent Infringement Civil Litigation

Malicious Patent Litigation

Patent Ownership Disputes

Inventorship Disputes

Patent Licensing/Assignment Contract Litigation

Joint Development/Commissioned R&D Contract Litigation

SEP (Standard-Essential Patent) Litigation

Non-Litigation Patent Services​

High-Value Patent Drafting & Filing

Patent Portfolio Strategy

Patent Reexamination

Patent Licensing

Patent Invalidation

Patent Assignment

Third-Party Patent Submissions

Patent Technology Collaboration

Patent Stability Search/Analysis

Patent System Development

Patent Infringement Analysis

Patent Custody Services

Patent Mining/TRIZ Innovation Mining

Agreement Drafting & Due Diligence for Patent Pledging/Financing

Patent Risk Alert & FTO (Freedom-to-Operate) Analysis

Patent R&D Evidence Preservation Solutions & Tools

Trademark Litigation Services​

Administrative Litigation (Rejection Review)

Administrative Litigation (Cancellation Review)

Administrative Litigation (Refusal Review)

Administrative Litigation (Invalidation)

Civil Litigation (Infringement)

Ownership Disputes

Contract Litigation (Use/Licensing/Assignment)

Criminal Trademark Cases

Trademark & Unfair Competition Litigation

Non-Litigation Trademark Services​

Trademark Registration

Review of Refusal/Rejection

Cancellation for Non-Use (3 Years)

Trademark Invalidation

Well-Known Trademark Recognition

Trademark Monitoring

Trademark Portfolio Strategy

Trademark Risk Alert

Corporate TM Compliance & System Development

Corporate TM Strategy

Coexistence Agreement Drafting

Administrative Complaints & Anti-Counterfeiting

Due Diligence Agreement Drafting & Risk Control for TM Licensing/Assignment/Pledging/Financing

Standardized Use & Infringement Evidence Preservation Solutions/Tools

Copyright​

Copyright Legal Documentation

Copyright Legal Advisory

Copyright Management System Development

Copyright Transactions

Copyright Transaction Legal Services

Copyright Infringement Legal Services

End-to-End Legal Support (Content Development)

Copyright Registration

Copyright Ownership Disputes

Copyright Licensing/Transfer/Use Contract Disputes

Copyright Infringement Disputes

Online Copyright Enforcement

Database & Cloud Computing Legal Protection | Data & Privacy Protection

Evidence Preservation Solutions/Tools (Creation & Infringement)

Trade Secrets (TS)​

TS Audit

TS Evidence Preservation

TS Management System Development & Implementation

TS Policy & Compliance Documentation Drafting

TS Civil Litigation

TS Criminal Litigation

Pre-Forensic Legal Advisory | Forensic Process Legal Support

​​IPO Intellectual Property Advisory​

Pre-IPO IP Compliance System Review & Optimization

Core Business-Patent Alignment Review | Patent Mining & Portfolio Strategy

Core IP Ownership Disputes Audit & Resolution

Core Product/Business Infringement Risk Assessment & Mitigation

Core Business Source & Dependency Audit & Optimization

Core Product Patent Stability Assessment

Corporate Trademark Infringement Audit

Corporate Brand Protection Risk Audit & Enhancement

​​Rights Confirmation Evidence Preservation​

Evidence Preservation Solutions & Tools for: Technology Development | Trade Secrets (TS) | Software Design | Content Creation

Infringement Evidence Preservation​

Online Infringement Preservation: Copyright | Trademark | Patent

Physical Infringement Product Preservation (Purchased Items)

Large Industrial Equipment/Product Preservation

Teams

Meihua Zhou

Managing Partner

Lawyer
Patent Agent
Meihua Zhou

Wenjun Miao

lawyer
Patent Agent
Wenjun Miao

Yu Li

Patent Litigation Agent
Yu Li

Fangfang Cai

Deputy Litigation Director

Fangfang Cai

Cases

Analyzing the Kubota Patent Invalidation Case: Innovation and Development in the Agricultural Machinery Industry

Analyzing the Kubota Patent Invalidation Case: Innovation and Development in the Agricultural Machinery Industry

Mobike is sued for infringement. How to get out of the predicament?

Mobike is sued for infringement. How to get out of the predicament?

Thoughts Behind Patent Invalidation Lawsuits: Patent Wars or Market Competition

Thoughts Behind Patent Invalidation Lawsuits: Patent Wars or Market Competition

The key technologies of the Hong Kong-Zhuhai-Macao Bridge have become the target of attacks, and Sanju Sunshine has repeatedly defended the validity of the patents.

The key technologies of the Hong Kong-Zhuhai-Macao Bridge have become the target of attacks, and Sanju Sunshine has repeatedly defended the validity of the patents.

Daqing Sanju Energy Purification Co., Ltd. won a 5 million yuan lawsuit against BASF SE in a patent invalidation case.

Daqing Sanju Energy Purification Co., Ltd. won a 5 million yuan lawsuit against BASF SE in a patent invalidation case.

American Catalytic Distillation Technologies Co., Ltd.

American Catalytic Distillation Technologies Co., Ltd.