fix: add kind code fallback for legal_status extraction#80
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When DOM-based legal_status extraction fails, derive status from the patent ID kind code: A* → Pending, B* → Active. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
legal_statuswhen DOM extraction methods failA*(e.g., A1, A2) → "Pending",B*(e.g., B1, B2) → "Active"Context
Google Patents HTML structure changes cause the existing 3 DOM extraction methods to fail, resulting in
legal_statusalways being null. This adds a lightweight fallback using the patent ID kind code already available in the URL.Note: Precise statuses like "Expired" or "Withdrawn" still require DOM extraction from patent office databases.
Test plan
cargo fmt --checkpassescargo clippy -D warningspassescargo testpasses🤖 Generated with Claude Code