“Challenger Brand Marketing®” Named Amazon Bestseller SAN FRANCISCO, May 23, 2023 (GLOBE NEWSWIRE) -- Gumas Advertising (www.gumas.com), the champion of the challenger brand, today announced that its new marketing handbook, “Challenger Brand...

Gumas Advertising Releases “Challenger Brand Marketing®” SAN FRANCISCO, Feb. 13, 2023 (GLOBE NEWSWIRE) -- Gumas Advertising (www.gumas.com), the champion of the challenger brand, today announced the release of a new book, “Challenger Brand Marketing®,”...

Gumas Advertising Granted Registered Trademark for Challenger Brand Marketing(R) SAN FRANCISCO, CA--(Marketwire - Dec 11, 2012) - Gumas Advertising (www.gumas.com) today announced that the United States Patent and Trademark Office (USPTO) has granted the firm's application to...