New USPTO API Endpoints

[dpieski]

Description

Adds three new API clients for USPTO Office Action data endpoints, each with full model, client, test, and documentation coverage:

• OAActionsClient — Office Action Text Retrieval API (v1): full-text office action documents including body text and structured section data (§101/102/103/112 rejections, citations, etc.)
• OARejectionsClient — Office Action Rejections API (v2): rejection-level records with rejection type indicators (hasRej101/102/103/112/DP), claim arrays, and examiner classification metadata
• OACitationsClient — Office Action Citations API: enriched citation records from office actions including cited document identifiers, legal section codes, and examiner-cited indicators

All three are provided with convenience query parameters for common fields.

Type of Change

• New feature (non-breaking change which adds functionality)
• Documentation update

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have tested this manually (if applicable)

912 unit tests passing, 100% coverage across all source files. Each new module includes unit tests for models, client, and integration tests (skipped by default; enabled via ENABLE_INTEGRATION_TESTS=true).

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

Related Issues

N/A

Additional Notes

Each client follows the established patterns from EnrichedCitationsClient. The base.py form-urlencoded branch in _get_model was extended to include all three new response types. Config and environment variable
support added for all three base URLs (USPTO_OA_ACTIONS_BASE_URL, USPTO_OA_REJECTIONS_BASE_URL, USPTO_OA_CITATIONS_BASE_URL).

To fix an unused import, remove the unneeded names from the import statement so that only actually-used symbols are imported. This simplifies the code and removes an unnecessary dependency.

In this file (tests/models/test_oa_actions_models.py), the best fix is to delete the entire line from datetime import datetime, timezone at line 6, since neither datetime nor timezone appears in the provided tests. No additional methods, definitions, or replacement imports are needed. The neighboring imports (from typing import Any, import pytest, and the pyUSPTO.models.oa_actions imports) should remain untouched.