# search_by_owner

Search for trademark owners by name. Use this to resolve or list candidate owners, not for owner counts, rankings, prosecution snapshots, or recent activity checks. Returns matching companies/individuals with their trademark portfolio statistics (total marks, live/dead counts, registered/pending).

Agent View of the PolicyLayer registry record for `search_by_owner`. HTML page: https://policylayer.com/tools/com-gleanmark-trademark-search/search-by-owner

## Facts

- Tool: `search_by_owner`
- Server: GleanMark Trademark Search (`https://gleanmark.com/mcp`) — https://policylayer.com/tools/com-gleanmark-trademark-search.md
- Homepage: https://github.com/https://gleanmark.com/mcp
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: yes
- Parameters: 2 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no | Maximum number of owners to return |
| `owner_name` | string | yes | Owner name to search for (company or individual) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "search_by_owner",
    "arguments": {
      "owner_name": "<owner_name>"
    }
  }
}
```

## Why search_by_owner is rated Low

This tool performs a straightforward lookup/query operation against a trademark database to retrieve information about trademark owners and their portfolio statistics. It has no side effects, does not modify data, execute code, delete anything, or involve financial transactions. The sole purpose is to retrieve and return existing data matching search criteria, making it a pure Read operation with low severity.

From the tool's own definition: "Tool description explicitly states it 'Search[es] for trademark owners by name' and 'Returns matching companies/individuals with their trademark portfolio statistics'. The verb 'search' and 'returns' indicate data retrieval with no modification."

## Use case

AI agents call search_by_owner to retrieve information from GleanMark Trademark Search without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches GleanMark Trademark Search:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_by_owner": {}
  }
}
```

## Other tools on GleanMark Trademark Search (60)

- `run_knockout_search` — Execute — https://policylayer.com/tools/com-gleanmark-trademark-search/run-knockout-search.md
- `run_safe_analytics` — Execute — https://policylayer.com/tools/com-gleanmark-trademark-search/run-safe-analytics.md
- `analyze_prosecution_history` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/analyze-prosecution-history.md
- `analyze_ttab_proceeding` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/analyze-ttab-proceeding.md
- `check_brand_availability` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/check-brand-availability.md
- `check_domain_availability` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/check-domain-availability.md
- `compare_marks` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/compare-marks.md
- `count_trademarks_by_attributes` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/count-trademarks-by-attributes.md
- `get_class_relationships` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-class-relationships.md
- `get_cohort_event_intervals` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-cohort-event-intervals.md
- `get_correspondent_marks` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-correspondent-marks.md
- `get_correspondent_specialization` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-correspondent-specialization.md
- `get_deadline_satisfaction_mapping` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-deadline-satisfaction-mapping.md
- `get_event_code_reference` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-event-code-reference.md
- `get_event_status_mapping` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-event-status-mapping.md
- `get_fame_profile` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-fame-profile.md
- `get_firm_correspondent_tasks` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-firm-correspondent-tasks.md
- `get_firm_deadlines` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-firm-deadlines.md
- `get_firm_oa_outcomes` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-firm-oa-outcomes.md
- `get_firm_top_correspondents` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-firm-top-correspondents.md
- `get_latest_office_action` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-latest-office-action.md
- `get_mark_ai_summary` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-mark-ai-summary.md
- `get_mark_deadlines` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-mark-deadlines.md
- `get_mark_international_profile` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-mark-international-profile.md
- `get_mark_owner_landscape` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-mark-owner-landscape.md
- `get_mark_prosecution_summary` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-mark-prosecution-summary.md
- `get_nice_classes` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-nice-classes.md
- `get_owner_ai_summary` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-owner-ai-summary.md
- `get_owner_deadlines` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-owner-deadlines.md
- `get_owner_filing_trends` — Read — https://policylayer.com/tools/com-gleanmark-trademark-search/get-owner-filing-trends.md
- …and 30 more: https://policylayer.com/tools/com-gleanmark-trademark-search.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-gleanmark-trademark-search · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-gleanmark-trademark-search