21 ONLINE holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 42 (Science & Technology) with 1 filings. The WikiTrademarks Expansion Score is 1/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 29, 2026
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Filing Velocity (24 Months)
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 |
|---|---|---|---|---|---|
| 75099281 | 21 ONLINE | May 06, 1996 | Pending | 042 Science & Technology | CENTURY 21 REAL ESTATE LLC |
Weekly visibility reports showing how ChatGPT mentions 21 ONLINE, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: 21 ONLINE trademark portfolio
What trademarks does 21 ONLINE hold?
21 ONLINE holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 42 (Science & Technology). The most recent filings are registered to CENTURY 21 REAL ESTATE LLC.
How many trademarks does 21 ONLINE have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to 21 ONLINE. The brand has been actively filing since May 1996. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does 21 ONLINE file most often?
21 ONLINE's most active class is NICE Class 42 (Science & Technology), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the 21 ONLINE trademark?
The most recent filings under the 21 ONLINE mark are registered to CENTURY 21 REAL ESTATE LLC. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is 21 ONLINE expanding into new categories?
The current WikiTrademarks Expansion Score for 21 ONLINE is 1 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 21 ONLINE trademark filings?
Click the Watch Brand button at the top of this page to add 21 ONLINE 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 21 ONLINE to another owner · Browse all NICE classes · Most valuable brands
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