C3 holds 8 USPTO trademark filings across 2 NICE classes. The largest concentration is in Class 42 (Science & Technology) with 3 filings. The WikiTrademarks Expansion Score is 27/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed July 6, 2026
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Filing Velocity (24 Months)
Filing Activity by NICE Class
Nice Class Distribution
Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99660201 | C3 | Feb 19, 2026 | Registered | ["B"] | Prestressed Concrete Institute |
| 99130389 | C3 | Apr 10, 2025 | Pending | 040 Material Treatment | Bryant Stephen James |
| 97418661 | C3 | May 19, 2022 | Registered | 035 Advertising & Business | Cumula 3 Group LLC |
| 88315625 | C3 | Feb 25, 2019 | Pending | 009 Electronics & Software 042 Science & Technology | C3.AI, INC. |
| 88315640 | C3 | Feb 25, 2019 | Pending | 035 Advertising & Business 042 Science & Technology | C3.AI, INC. |
| 87186605 | C3 | Sep 28, 2016 | Pending | 042 Science & Technology | Transcat, Inc. |
| 87031890 | C3 | May 10, 2016 | Abandoned | 012 Vehicles | C3 LLC |
| 85601430 | C3 | Apr 18, 2012 | Abandoned | 006 Metal Goods | COMPASS CREATIONS and CULMINATION LLC |
Weekly visibility reports showing how ChatGPT mentions C3, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: C3 trademark portfolio
What trademarks does C3 hold?
C3 holds 8 USPTO trademark filings across 2 NICE classes. The largest concentration is in Class 42 (Science & Technology), Class 35 (Advertising & Business), Class 6 (Metal Goods). The most recent filings are registered to Prestressed Concrete Institute.
How many trademarks does C3 have at the USPTO?
WikiTrademarks tracks 8 USPTO trademark filings attributed to C3. The brand has been actively filing since April 2012. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does C3 file most often?
C3's most active class is NICE Class 42 (Science & Technology), with 3 filings. The full distribution across all 2 classes is shown in the Nice Class Distribution panel on this page.
Who owns the C3 trademark?
The most recent filings under the C3 mark are registered to Prestressed Concrete Institute. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is C3 expanding into new categories?
The current WikiTrademarks Expansion Score for C3 is 27 out of 100, which is low — the brand is focused on defending its existing categories rather than expanding. The score combines NICE class breadth, filing velocity, and the rate of cross-class movement from the brand's filing history.
How can I track new C3 trademark filings?
Click the Watch Brand button at the top of this page to add C3 to your Watchlist. New filings show up on your WikiTrademarks dashboard within 24 to 48 hours of being public, alongside any class expansions, status changes, or assignment events.
More on this portfolio: Compare C3 to another owner · Browse all NICE classes · Most valuable brands
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