The clearest differences (from top to bottom) Segoe UI, Frutiger, and Segoe So at the end of 2006, Linotype, the company that had challenged the validity of Microsoft's Segoe patents, was a wholly owned subsidiary of Monotype, the company that had originally licensed Segoe to Microsoft. Later, in August 2006, Monotype Imaging acquired Linotype. Microsoft still holds United States design patents for various Segoe-based fonts.ĭuring the same period, in late 2004, after six years under the Agfa Corporation, the Monotype assets were acquired by TA Associates and the company was incorporated as Monotype Imaging. The EU rejected these claims, and in February 2006, the EU revoked Microsoft's registration. In its submission to the EU, Microsoft claimed that Linotype had failed to prove that it had been selling Frutiger and Frutiger Next prior to 2004. The German font foundry Linotype protested, citing Segoe UI's similarity to its licensed Frutiger family of typefaces.

In 2004, Microsoft registered certain Segoe and Segoe Italic fonts as original font designs with the European Union trademark and design office. Matteson created a range of weights and italics with a humanist feel. Licensed to Microsoft for use as a branding typeface and user interface font, it was designed to be friendly and legible.

Segoe was designed by Steve Matteson during his employment at Agfa Monotype.

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