ChinaForge AI
Chinese Patent Filing · CNIPA Prosecution · Re-examination · Invalidation
Art. 22 / Art. 26 / Art. 33 compliant · Three-step approach · Self-learning AI · 专利法 2021
CNIPA Patent Intelligence
CNIPA Patent Search
Keyword, IPC, and applicant search across 40M+ CN documents via Paten and CNIPA databases.
Art. 26 Claim Drafting
Support & enablement-compliant claim drafting aligned with CNIPA examination guidelines.
Three-Step Inventive Step
CNIPA's structured inventive step (创造性) analysis with objective technical problem approach.
Fee Calculator
Real-time CNIPA fee calculation for invention, utility model, and design patents.
Deadline Tracker
3-year substantive exam request, OA response, re-examination, PCT national phase entry.
PPH & Accelerated Exam
Patent Prosecution Highway eligibility and 优先审查 accelerated examination request guidance.
Re-exam & Invalidation
复审 Re-examination (Art. 41) and 无效宣告 Invalidation (Art. 45) strategy and procedure.
Dual Filing Strategy
Utility model + invention simultaneous filing for early protection and long-term coverage.
CNIPA Application Journey
Request (请求书) + spec (说明书) + claims + abstract + drawings. Filing fee ¥900+.
Request within 3 years or application lapses. Fee: ¥2,500. Exam begins 6–9 months after request.
20-year term from filing. Annual maintenance fees from Year 4. Registration certificate issued.