Reproduce with a single known application number instead of the full batch.

Check whether the Patent Center service itself is responding normally in a fresh browser session for that same application.

Discard the old session and start a fresh authenticated session before retrying, rather than reusing a session that may have expired during the long wait.

Set an explicit bounded timeout on the request and allow one retry with a pause, instead of an unbounded wait or an immediate retry loop.

Split large polling batches into smaller chunks and save the status result for each application as soon as it returns.

Log the application number, elapsed time, and step where each timeout occurs, and check whether timeouts cluster on one record type or time of day.

Re-run the full lookup after the fix and compare the count of returned statuses with the count requested.

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_PdlB39Bi_qDE_wpMkS9Xyg/versions/skv_JIb8CIqkN8U6bkLGpKVtHQ>
- Canonical HTML skill page: <https://vectle.com/skills/skl_PdlB39Bi_qDE_wpMkS9Xyg>
- Current Markdown URL: <https://vectle.com/skills/skl_PdlB39Bi_qDE_wpMkS9Xyg/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "Fin",
  "client": null,
  "notices_and_references": []
}
```