https://en.wikipedia.org/wiki/QR_code#License
The text QR Code itself is a registered trademark and wordmark of Denso Wave Incorporated.[107]
https://www.qrcode.com/en/faq.html
https://greatreachinc.com/blog/one-thing-about-qr-codes-you-...
Should “QR Code” be capitalized?
Yes. “QR Code” must always be capitalized: both letters in “QR” and the “C” in “Code.” The registered trademark symbol (®) should follow the term in published materials. Using lowercase, adding an “s,” or other variations does not exempt you from the trademark.
This is the most non-sensical comment here. That’s not at all how trademarks work.
“Whoa! Some article said this mail app is an ‘Outlook’ for TempleOS! Better call the Microsoft lawyers.”
No, you’re allowed to compare products and ideas and mention their trademarked names without fear of legal issues.
Did the researchers name these “QR codes?”
> Did the researchers name these “QR codes?”
Yes.