5 Critical Mistakes to Avoid When Filing Patents in China
When filing patents in China, many international companies make costly mistakes that could have been easily avoided. Based on our decade of experience handling 3,000+ IP cases, here are the five most critical errors and how to prevent them.
1. Waiting Too Long to File
China operates on a strict “first-to-file” system. Unlike the US grace period, any public disclosure before filing can invalidate your patent application. We’ve seen companies lose patent rights simply because they presented at a conference before filing.
Solution: File your Chinese patent application before any public disclosure, trade show, or academic publication. Consider filing provisionally to secure your priority date.
2. Using Direct Translation Without Technical Review
Patent terminology requires precision. Direct translations often miss technical nuances or use incorrect Chinese technical terms, leading to weak patent claims or office action rejections.
Solution: Work with IP professionals who combine technical expertise with translation skills. Our team includes Ph.D.-level experts who understand both the technology and Chinese patent terminology.
“Their backend QA system caught an error in our drawings that even our internal team missed. That’s real expertise.” - Dr. Andreas Müller, BioPhoton GmbH
3. Ignoring the Patent Prosecution Highway (PPH)
Many companies don’t realize they can accelerate Chinese patent examination from 18-24 months down to 6-8 months using PPH, if they have corresponding patents in other jurisdictions.
Solution: If you have granted or allowed patents in the US, Europe, Japan, or Korea, leverage PPH to fast-track your Chinese applications. This can save significant time and costs.
4. Filing Too Broad or Too Narrow
Some companies file overly broad claims that get rejected, while others file too narrowly and miss protection opportunities. Both approaches waste time and money.
Solution: Conduct thorough prior art analysis specific to China’s patent database. Our strategic approach balances strong protection with realistic grant expectations.
5. Neglecting Portfolio Management
Filing a patent is just the beginning. Without proper maintenance, renewal tracking, and strategic portfolio review, companies lose protection inadvertently or waste money on unnecessary patents.
Solution: Use a systemized platform for tracking deadlines, renewals, and portfolio strategy. Our dashboard provides real-time visibility into your entire China IP portfolio.
Key Takeaways
- File before any public disclosure
- Use technical experts for translations
- Leverage PPH when possible
- Balance claim scope strategically
- Implement systematic portfolio management
Ready to protect your innovations in China the right way? Book a consultation with our patent experts today.