AMBISOME holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 5 (Pharmaceuticals) with 2 filings. The WikiTrademarks Expansion Score is 0/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 14, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 88849383 | AMBISOME | Mar 26, 2020 | Pending | 005 Pharmaceuticals | Gilead Sciences, Inc. |
| 73814641 | AMBISOME | Jul 24, 1989 | Abandoned | 005 Pharmaceuticals | GILEAD SCIENCES, INC. |
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FAQ: AMBISOME trademark portfolio
What trademarks does AMBISOME hold?
AMBISOME holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 5 (Pharmaceuticals). The most recent filings are registered to Gilead Sciences, Inc..
How many trademarks does AMBISOME have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to AMBISOME. The brand has been actively filing since July 1989. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does AMBISOME file most often?
AMBISOME's most active class is NICE Class 5 (Pharmaceuticals), with 2 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the AMBISOME trademark?
The most recent filings under the AMBISOME mark are registered to Gilead Sciences, Inc.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is AMBISOME expanding into new categories?
The current WikiTrademarks Expansion Score for AMBISOME is 0 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 AMBISOME trademark filings?
Click the Watch Brand button at the top of this page to add AMBISOME 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 AMBISOME to another owner · Browse all NICE classes · Most valuable brands