PI holds 15 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 42 (Science & Technology) with 9 filings. The WikiTrademarks Expansion Score is 28/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 15, 2026
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Filing Velocity (24 Months)
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Recent Filings
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FAQ: PI trademark portfolio
What trademarks does PI hold?
PI holds 15 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 42 (Science & Technology), Class 9 (Electronics & Software), Class 35 (Advertising & Business). The most recent filings are registered to Earendil Inc..
How many trademarks does PI have at the USPTO?
WikiTrademarks tracks 15 USPTO trademark filings attributed to PI. The brand has been actively filing since April 2016. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does PI file most often?
PI's most active class is NICE Class 42 (Science & Technology), with 9 filings. The full distribution across all 1 classes is shown in the Nice Class Distribution panel on this page.
Who owns the PI trademark?
The most recent filings under the PI mark are registered to Earendil Inc.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is PI expanding into new categories?
The current WikiTrademarks Expansion Score for PI is 28 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 PI trademark filings?
Click the Watch Brand button at the top of this page to add PI 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.
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