HDCO holds 3 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 35 (Advertising & Business) with 1 filings. The WikiTrademarks Expansion Score is 4/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed August 30, 2026
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Filing Velocity (24 Months)
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Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 88549211 | HDCO | Jul 30, 2019 | Pending | 035 Advertising & Business | Harrington Design Company |
| 88550009 | HDCO | Jul 30, 2019 | Pending | 041 Education & Entertainment | Harrington Design Company |
| 88550512 | HDCO | Jul 30, 2019 | Pending | 042 Science & Technology | Harrington Design Company |
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FAQ: HDCO trademark portfolio
What trademarks does HDCO hold?
HDCO holds 3 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 35 (Advertising & Business), Class 41 (Education & Entertainment), Class 42 (Science & Technology). The most recent filings are registered to Harrington Design Company.
How many trademarks does HDCO have at the USPTO?
WikiTrademarks tracks 3 USPTO trademark filings attributed to HDCO. The brand has been actively filing since July 2019. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does HDCO file most often?
HDCO's most active class is NICE Class 35 (Advertising & Business), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the HDCO trademark?
The most recent filings under the HDCO mark are registered to Harrington Design Company. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is HDCO expanding into new categories?
The current WikiTrademarks Expansion Score for HDCO 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 HDCO trademark filings?
Click the Watch Brand button at the top of this page to add HDCO 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 HDCO to another owner · Browse all NICE classes · Most valuable brands
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