GleanMark’s comparison tool lets you view up to 5 trademarks side by side, comparing every detail from owner and status to goods and services. When comparing exactly 2 marks, you can run a Confusion Analysis directly.
How It Works
Select marks from search results — check the boxes next to trademarks you want to compare (up to 5)
Click Compare — or go directly to
/compare?serials=12345678,87654321Review the comparison — marks appear in columns with rows for each attribute
Run Confusion Analysis — when exactly 2 marks are selected, a button appears to run a full DuPont factor analysis
What’s Compared
The comparison table shows these attributes side by side:
Attribute | What It Shows |
Owner | Entity that owns the mark |
Status | Registration status (color-coded badges) |
Mark Category | Trademark, Service Mark, Collective, or Certification |
Mark Type | Word, Stylized, Design, Sound, or Composite |
Filing Date | Application date (earliest is highlighted) |
First Use Date | Date of first commercial use |
Registration Date | When registered (earliest highlighted) |
Nice Classes | International classes with description tooltips |
Goods & Services | Full description of covered goods/services |
Current Basis | Filing basis (use-in-commerce, intent-to-use, etc.) — shows both current and original when they differ |
TTAB Activity | Any opposition or cancellation proceedings |
Earliest dates are highlighted across columns so you can quickly see which mark has seniority.
Sharing Comparisons
The comparison URL contains all selected serial numbers: /compare?serials=90244982,88126475. Copy and share the URL to send the comparison to a colleague — no login required to view.
Export
Use the export button to download the comparison data for offline review or client deliverables.
Tips
Compare potential conflicts — after a knockout search, compare your proposed mark with the highest-risk results
Check filing basis differences — a use-based application has different legal standing than an intent-to-use application
Look at class overlap — if two marks are in the same Nice class, the conflict risk is higher
Use the 2-mark Confusion Analysis — for the most thorough analysis, select exactly 2 marks and run the DuPont analysis
Related Features
Power Search — Search and select marks for comparison
Confusion Analysis (DuPont) — Full 13-factor analysis
Reading Search Results — Understanding what each result shows