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Markus AI: Your Trademark Intelligence Assistant

By Howard Katzenberg
April 13, 2026
9 min read

The team behind GleanMark

Updated October 12, 2026

Markus is GleanMark's AI-powered trademark assistant. Ask questions in plain English and get answers backed by real USPTO data — 14M+ trademark records, TTAB proceedings, prosecution histories, and your own portfolio. Markus can search, analyze, compare, and monitor, all through conversation.

What You Can Do

  • Search trademarks — "Find marks similar to Moonlight Coffee in Class 43"
  • Compare marks — "Compare TESLA and TESLAR for confusion risk"
  • Run knockout searches — "Run a knockout search for BRIGHTPATH in Class 9"
  • Analyze prosecution history — "Show me the prosecution timeline for serial 90244982"
  • Research office actions — "What are the best arguments against a 2(d) refusal for this mark?"
  • Check upcoming deadlines — "What deadlines are coming up for my tracked marks?"
  • Investigate owners — "What has Nike filed in the last 6 months?"
  • Analyze TTAB proceedings — "Analyze TTAB proceeding 91285431"
  • Check domain availability — "Is brightpath.com available?"
  • Check brand availability — "Check brand availability for BRIGHTPATH"
  • Get Nice class recommendations — "What classes should I file a coffee shop under?"

How It Works

  1. Navigate to Markus — Click "Markus AI" in the sidebar, or go to /markus
  2. Type your question — Use natural language. Markus understands trademark terminology but you don't need to use it.
  3. Watch Markus work — As Markus processes your request, you can see its current step and a summary of the sources used after it responds.
  4. Review the response — Markus returns structured answers with links to trademark pages, owner profiles, TTAB proceedings, and other GleanMark features. Click any link to see the full detail.
  5. Follow up — Ask follow-up questions in the same conversation. Markus keeps recent conversation context, though very long conversations may trim older messages.

Key Features

Conversation History

Completed conversations are saved automatically. Access past conversations from the sidebar panel in the chat view, where you can filter by title, star favorites, rename, and delete conversations. A dedicated conversation history page is also available for browsing and managing all past conversations.

Source Visibility

When Markus searches the database or runs an analysis, you can see what step it's currently performing and a summary of the tools used after the response completes. Responses also include a Sources button showing the count of supporting sources cited in the answer — click it to view the underlying records.

Inline Charts

Markus can generate bar charts, line charts, pie charts, and composed visualizations directly in the conversation when presenting statistical or trend data.

Smart Links

Markus formats all trademark references as clickable links — serial numbers go to trademark detail pages, owner names link to owner profiles, TTAB proceeding numbers link to proceeding pages, and Nice class numbers link to class descriptions.

Workspace Awareness

Markus knows about your clients, portfolios, tracked owners, upcoming deadlines, and recent alerts. Ask "What needs my attention?" and Markus checks across the workspace data you have access to.

File Attachments

Add files to a message with the + button next to the message box, by dragging them into the chat, or by pasting an image. Markus reads each file and uses it in its answer. You can attach up to 5 files per message:

  • Images: PNG, JPG, WebP and GIF, up to 5 MB each
  • PDFs, such as an Office Action or a specimen, up to 5 MB each (images and PDFs together can total 10 MB)
  • Word (.docx) and Excel (.xlsx), up to 10 MB each. Markus reads the text and tables, and every tab of a spreadsheet. Pictures inside a Word file are not read.
  • CSV and plain text files, up to 200 KB each

If a Word or Excel file is very long, Markus reads the first part, and both you and Markus are told how much was included. Older .doc and .xls files and PowerPoint files can't be read: save them as .docx, .xlsx or PDF first.

Markus reads a file with the message you attach it to. To have Markus look at the file again in a later message, attach it again.

Google Docs, Sheets and Slides

Paste a link to a Google Doc, Sheet or Slides deck into your message, and Markus attaches the file automatically. A "Reading…" label shows while the file loads, and the Send button turns back on once it is ready.

The file must be shared as Anyone with the link: in Google, click Share and change General access. If it isn't, GleanMark shows a message explaining how to share it. Google Drive links to uploaded files (drive.google.com) are not supported; download the file and attach it instead.

Shareable Conversations

Create a read-only link to any conversation and share it with colleagues or clients. The shared view displays the full conversation without edit access. Available on Starter and above.

Background Jobs

Long-running tasks — such as drafting an office action response or analyzing a TTAB proceeding — run in the background. Markus shows a live status card in the conversation, and the result appears when the work completes. Background jobs persist across page reloads, so you can navigate away and return to find the finished result.

Queued Follow-ups

While Markus is generating a response, you can type your next question and it will queue automatically. The composer stays active during streaming, so you can keep drafting without waiting.

Response Feedback

Rate any response as helpful or not helpful. If you mark a response as not helpful, you can select a reason to help our team improve Markus.

Rephrase Responses

Ask Markus to rephrase any answer without running new research. Choose from three options: make the answer clearer, shorter, or client-ready.

Example Conversations

Quick search:

"Search for trademarks similar to Moonlight Coffee" Markus runs a phonetic + trigram search and returns the top matches with similarity scores.

Workspace overview:

"What deadlines are coming up for my tracked marks?" Markus checks your upcoming deadlines and lists them by urgency.

Confusion risk comparison:

"Compare TESLA and TESLAR for confusion risk" Markus runs a mark comparison and explains the similarity factors.

Trademark lookup:

"Look up serial number 90244982" Markus fetches the trademark, shows its status, prosecution history, and any pending actions.

Tips & Best Practices

  • Be specific about classes — "Search for APEX in Class 9" gives more relevant results than just "Search for APEX"
  • Use follow-ups — After a search, ask "Which of those are in Class 25?" or "Compare the top two"
  • Ask about your data — Markus can access your clients, tracked owners, and alerts. Try "Summarize my client Acme Corp" or "What alerts fired this week?"
  • Use proceeding numbers for TTAB — "Analyze proceeding 91285431" works better than "Find the opposition between X and Y"
  • Request analysis, not just search — "Analyze the prosecution history of serial 90244982" gives a strategic summary, not just raw events

What's Included in Each Plan

FeatureFreeStarterProfessionalMax
Markus accessNo5 messages/monthUnlimitedUnlimited
Conversation history—Full historyFull historyFull history
Shareable conversations—YesYesYes
File attachments—YesYesYes
Workspace tools (clients, portfolios)—YesYesYes
All search & analysis tools—YesYesYes

Markus is available on Starter (5 messages/month), Professional, and Max plans. Free plan users see an upgrade prompt when accessing /markus. On limited plans, a message counter in the chat header shows how many messages you have left this month, with a reminder when you reach 80% of your allowance.

Related Features

  • Knockout Search — The same search Markus uses, with a visual results interface
  • Setting Up Alerts — Automated monitoring that Markus can report on

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