lookup_trademark
Get detailed information about a specific USPTO trademark by its serial number. Returns owner, status, filing dates, goods/services, correspondent (attorney/law firm of record — use this for "which firm represents/is correspondent for" questions), and more.
This record as markdown: /tools/com-gleanmark-trademark-search/lookup-trademark.md
What lookup_trademark does on GleanMark Trademark Search
AI agents call lookup_trademark 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.
| Parameter | Type | Required | Description |
|---|---|---|---|
serial_number | string | Yes | USPTO serial number (exactly 8 digits) |
Parameters from the server's own tool schema.
Why lookup_trademark is rated Low
This tool queries and retrieves existing public trademark data with no side effects. It matches the 'Read' category as a data retrieval operation with no capability to create, modify, delete, or execute operations. The severity is low because trademark lookup data is publicly available and poses minimal risk even if misused by an AI agent.
From the tool's definition Tool 'lookup_trademark' retrieves detailed information (owner, status, filing dates, goods/services, correspondent) about a specific USPTO trademark by serial number. No modification, deletion, execution, or financial operation is described.
Attacks that exploit this kind of access
The rule that runs lookup_trademark safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GleanMark Trademark Search, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For lookup_trademark, this is the rule to start with:
lookup_trademark is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect GleanMark Trademark Search, apply this rule, and every lookup_trademark call is checked against it from then on.
Questions about lookup_trademark
Get detailed information about a specific USPTO trademark by its serial number. Returns owner, status, filing dates, goods/services, correspondent (attorney/law firm of record — use this for "which firm represents/is correspondent for" questions), and more. It is categorised as a Read tool in the GleanMark Trademark Search MCP Server, which means it retrieves data without modifying state.
lookup_trademark accepts 1 parameter: serial_number. Required: serial_number. The full parameter table on this page comes from the server's own tool schema.
Register the GleanMark Trademark Search MCP server in PolicyLayer and add a rule for lookup_trademark: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches GleanMark Trademark Search. Nothing to install.
lookup_trademark is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the lookup_trademark rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for lookup_trademark. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
lookup_trademark is provided by the GleanMark Trademark Search MCP server (https://gleanmark.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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