FSI holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 35 (Advertising & Business) with 1 filings. The WikiTrademarks Expansion Score is 26/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 14, 2026
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Sign in to claimHow is FSI 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
2 records| Date | From | To |
|---|---|---|
| Mar 11, 2015 |
PALL FILTER SPECIALISTS, INC.
|
PALL CORPORATION
PORT WASHINGTON, NEW YORK
|
| Feb 25, 2015 |
FILTER SPECIALISTS INCORPORATED
|
PALL FILTER SPECIALISTS, INC.
MICHIGAN CITY, INDIANA
|
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99779469 | FSI | Apr 22, 2026 | Registered | 035 Advertising & Business | Humane America Animal Foundation |
| 73043432 | FSI | Feb 05, 1975 | Pending | 011 Lighting & HVAC | PALL CORPORATION |
Weekly visibility reports showing how ChatGPT mentions FSI, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: FSI trademark portfolio
What trademarks does FSI hold?
FSI holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 35 (Advertising & Business), Class 11 (Lighting & HVAC). The most recent filings are registered to Humane America Animal Foundation.
How many trademarks does FSI have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to FSI. The brand has been actively filing since February 1975. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does FSI file most often?
FSI'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 FSI trademark?
The most recent filings under the FSI mark are registered to Humane America Animal Foundation. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is FSI expanding into new categories?
The current WikiTrademarks Expansion Score for FSI is 26 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 FSI trademark filings?
Click the Watch Brand button at the top of this page to add FSI 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 FSI to another owner · Browse all NICE classes · Most valuable brands