Some ideas if someone stole your fonts:
You can:
1 Threaten with legal action,
2 Force to pay what they already should have, and/or
3 Sue

https://www.thomasphinney.com/2024/05/do-companies-get-sued-for-using-fonts-illegally/
Fonts and the Law (Read!) @tphinney
https://www.commarts.com/columns/fonts-and-the-law
Also:
"copyright owners can sue companies ..."

https://natlawreview.com/article/fine-print-avoiding-ip-pitfalls-unlicensed-fonts
#typography #Copyright #StolenFonts
“Do companies get sued for using fonts illegally?”

Originally posted on Quora, in response to a user question. Due to Quora’s increasingly desperate and user-hostile changes, I revised and reposted it here. Last update 29 May 2024. Yes, companies o…

Phinney on Fonts
🔴 In the United States, under the Digital Millennium Copyright Act (DMCA), copyright holders can complain to infringers’ internet service providers. Repeat infringement after warnings can lead to loss of internet service—although this is rare.
@tphinney #commarts
https://www.commarts.com/columns/fonts-and-the-law
Fonts and the Law | Communication Arts

What are the legal issues surrounding fonts? Thomas Phinney introduces designers to what they need to know.

Communication Arts