Verify Assignment API Schema Changes (Release 2.9)

[dpieski]

Overview

USPTO API Release 2.9 (October 2025) migrated the Assignment system to a new platform with updated data attributes. The Assignment API integration was updated in Phase 1. Current models need verification.

Current Implementation

Location: src/pyUSPTO/models/patent_data.py

Models to verify: Assignment, Assignor, Assignee

Release 2.9 Changes

Breaking Changes

1. Conveyance Document Link Disabled - verify if download capability still exists
2. Assignment Data Attributes Updated - schema changes documented in changelog
3. Supplemental File Downloads Fixed - test this functionality

Required Investigation

1. Review Assignment Data Attributes Changelog

• Locate and review changelog
• Identify all field changes
• Document schema differences

2. Test Assignment Retrieval

• Run integration tests with get_application_assignment()
• Verify all fields parse correctly
• Check for new/removed fields

3. Test Supplemental File Downloads

• Verify supplemental file download functionality
• Ensure download methods work correctly

Deliverables

1. Investigation report
2. Model updates (if needed)
3. Client updates (if needed)
4. Test updates
5. Documentation updates

API Information

• Release Version: 2.9 (2025-10-17)
• Migration: Phase 1 complete

Priority

Medium

Estimated Effort

Small-Medium (few hours to 1 day)