Patent Infringement Damages in the Chinese Courts

Chinese courts calculate patent infringement damages according to a statutory hierarchy: actual loss of the patentee, illegal gain of the infringer, reasonable royalty, and statutory damages. The Civil Code and the Patent Law, as amended, introduced punitive damages of up to five times the calculated base amount for wilful infringement, marking a significant shift in the enforcement landscape. Yuki Tanaka assists clients in gathering the evidence needed to support each damages head, including sales records, profit data, and royalty benchmarks.

The use of evidence preservation orders and discovery-like procedures has expanded in Chinese IP litigation. Yuki advises on the strategic timing of preservation applications and helps clients prepare the documentary foundation needed to obtain favourable court orders. He also coordinates with Chinese counsel to ensure that evidence gathered in Japan is properly authenticated and translated for use in Chinese proceedings.

Cross-Border IP Strategy

Technology companies operating across Japan and China face distinct IP environments that require coordinated strategies. Yuki Tanaka advises on parallel patent filings in both jurisdictions, managing the prosecution timeline to align with product launch schedules and competitive intelligence gathering. He also counsels on trade secret protection, including the documentation of confidential information management systems and the preparation of non-disclosure agreements that comply with both Japanese and Chinese legal requirements.

• ⚖️ Patent infringement damages analysis under Chinese law
• 📜 Cross-border patent portfolio management and enforcement
• 🛡️ Trade secret protection and non-disclosure agreement drafting
• 💼 Technology licensing agreement negotiation and compliance

Tokyo Practice Context

Based in Tokyo, Yuki Tanaka serves Japanese and international technology companies that hold patents in China or face competition from Chinese manufacturers. His bilingual capability in Japanese, English, and Mandarin enables effective communication with clients, Chinese counsel, and court-appointed experts. He maintains relationships with IP law firms in Beijing, Shanghai, and Shenzhen and can coordinate multi-jurisdictional enforcement strategies through a single point of contact.

Professional Standards

Yuki Tanaka holds membership in the Dai-ni Tokyo Bar Association and operates within the professional conduct rules governing Japanese bengoshi practice. Patent matters are evaluated on the basis of claim construction analysis and prior art review before enforcement recommendations are made. Fee structures are confirmed in writing before engagement, and clients receive regular progress reports with clear assessments of procedural developments and strategic options.

Patent Prosecution and Portfolio Strategy

Yuki Tanaka advises clients on patent prosecution strategy for both Japanese and Chinese patent applications, taking into account the different examination timelines, claim construction practices, and opposition procedures applicable in each country. He develops filing strategies that prioritise inventions according to commercial importance and competitive landscape, coordinates the preparation of translation and localisation of patent specifications to meet the formal requirements of each patent office, and manages the response to office actions through local associates.

His patent portfolio strategy includes freedom-to-operate analysis for clients launching products in the Chinese market, patent landscaping to identify competitive patent positions and white-space opportunities, and the evaluation of patent quality and enforceability for portfolio acquisition and divestiture decisions. Yuki also advises on the use of patent prosecution highway programmes that accelerate examination in China based on allowed claims in Japan or other participating patent offices.

Client Engagement Approach

Yuki Tanaka offers initial consultations to assess patent portfolio needs and enforcement risks. Fee arrangements are structured around fixed fees for patent prosecution milestones, capped fees for enforcement strategy development, and hourly rates for litigation support and advisory work. All engagement terms and cost estimates are confirmed in writing before commencement.

IP Litigation Support

Yuki Tanaka provides expert support in Chinese IP litigation matters, including the preparation of technical claim charts that map patent claims to allegedly infringing products, the coordination of expert witness testimony on patent validity and infringement questions, and the management of evidence collection and preservation procedures. He works alongside Chinese litigation counsel to develop case strategy and ensure that technical arguments are presented effectively in court proceedings.