ra2studio / Shutterstock.com
A US artist who was granted a trademark for the mathematical symbol ‘pi’ has secured the rights to another symbol, this time a popular sign used in text messages.
To continue reading, you need a subscription to WIPR. Start a subscription to WIPR for £455.
In-house feature articles, the archive and expert comment require a paid subscription. Subscribe now.
Want to give it a try? We are offering a two week free trial to the WIPR website – register and select “Free Trial” to begin access to the full WIPR archive and read the latest news, features and expert comment. Begin your free trial here.
Is your 2 week free trial about to end? Upgrade to a 12 month subscription for £455 now.
If you have already subscribed please login.
If you have any technical issues please email James Lynn on firstname.lastname@example.org.
Pi, trademark, USPTO