C21 holds 7 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 36 (Insurance & Finance) with 3 filings. The WikiTrademarks Expansion Score is 4/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 29, 2026
Own this brand? Claim the profile to add your logo, story, and website.
Sign in to claimHow is C21 filing trademarks, and where is the portfolio expanding?
Filing Velocity (24 Months)
Filing Activity by NICE Class
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Ownership & Assignment History
1 record| Date | From | To |
|---|---|---|
| Nov 25, 2015 |
BETTER HOMES AND GARDENS REAL ESTATE LIC...
BURNET REALTY LLC
CARTUS CORPORATION
CDRE TM LLC
CENTURY 21 REAL ESTATE LLC
CGRN INC.
COLDWELL BANKER REAL ESTATE LLC
ERA FRANCHISE SYSTEMS LLC
MARTHA TURNER PROPERTIES, L.P.
NRT NEW YORK LLC
ONCOR INTERNATIONAL LLC
REALOGY GROUP LLC
SOTHEBY'S INTERNATIONAL REALTY LICENSEE...
TITLE RESOURCE GROUP LLC
ZIPREALTY LLC
|
JPMORGAN CHASE BANK, N.A., AS ADMINISTRA...
CHICAGO, ILLINOIS
|
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99516241 | C21 | Nov 25, 2025 | Registered | 009 Electronics & Software | Mira Safety, LLC |
| 87837474 | C21 | Mar 16, 2018 | Pending | 035 Advertising & Business | Century 21 Real Estate LLC |
| 87837483 | C21 | Mar 16, 2018 | Pending | 036 Insurance & Finance | Century 21 Real Estate LLC |
| 87775752 | C21 | Jan 30, 2018 | Pending | 035 Advertising & Business | Century 21 Real Estate LLC |
| 87775755 | C21 | Jan 30, 2018 | Pending | 036 Insurance & Finance | Century 21 Real Estate LLC |
| 87748422 | C21 | Jan 09, 2018 | Pending | 035 Advertising & Business | CENTURY 21 REAL ESTATE LLC |
| 78427047 | C21 | May 28, 2004 | Abandoned | 036 Insurance & Finance | CENTURY 21 REAL ESTATE LLC |
Weekly visibility reports showing how ChatGPT mentions C21, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: C21 trademark portfolio
What trademarks does C21 hold?
C21 holds 7 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 36 (Insurance & Finance), Class 35 (Advertising & Business), Class 9 (Electronics & Software). The most recent filings are registered to Mira Safety, LLC.
How many trademarks does C21 have at the USPTO?
WikiTrademarks tracks 7 USPTO trademark filings attributed to C21. The brand has been actively filing since May 2004. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does C21 file most often?
C21's most active class is NICE Class 36 (Insurance & Finance), with 3 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the C21 trademark?
The most recent filings under the C21 mark are registered to Mira Safety, LLC. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is C21 expanding into new categories?
The current WikiTrademarks Expansion Score for C21 is 4 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 C21 trademark filings?
Click the Watch Brand button at the top of this page to add C21 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 C21 to another owner · Browse all NICE classes · Most valuable brands
Community notes
0 notesShare what you know about C21 and help the next person researching it.