Is it possible to trademark the symbol Pi, followed by a period?

The cease and desist letter from Attorney Ronald Millet claims Zazzle has “unlawful use of PI trademark.”

Can the Greek letter, widely used in math, known as Pi, be eligible for trademark protection?

Well, an attorney from Long Island has threatened a business known as Zazzle with legal action if it does not cease and desist using the Greek letter followed by a period on its t-shirts.

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Ed Silverstein

Ed Silverstein is a veteran writer and editor for magazines, websites and newspapers. A graduate of Harvard's Kennedy School of Government, he has won several...

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