Patent Landscape
Search design
- Do not rely on keywords — IPC/CPC classification is the axis: classification codes solve the problem of the same technology filed under different terms.
- Procedure: ① secure 3–5 representative patents → ② extract their IPC/CPC codes → ③ search classification codes in full, in parallel with technical terms → ④ expand via citations and cited-by.
- Use the filing date (priority date) for time series — registration dates distort.
Landscape analysis
- Assignee concentration CR5: top-5 share > 50% = mature, high entry barriers; < 20% = fragmented.
- Lifecycle: filing trends per classification code. Growth-stage signals = rising counts + appearance of new entrants.
- Citation clusters: a persistently cited, strong citation axis = the technology core. Non-citing (independent) clusters = white-space candidates.
- Patent family analysis: country-expansion patterns of the same filing = commercialization signal (families covering major markets are the valid assets).
FTO screening (3 risk factors)
Validity (annuities kept up, rights maintained) × infringement likelihood (representative claim vs. product configuration — literal + doctrinal reading) × jurisdiction (manufacturing and sales venues). Never assert infringement — hand off to a patent attorney for legal review.
Output
# Patent Landscape — {technology} ({as-of date})
## Entry-barrier verdict (CR5 · lifecycle stage)
## IPC map (code | meaning | filing trend | key assignees)
## 3 white spaces + evidence
## Risk list (application no. | right holder | jurisdiction | 3-factor grade | response options)