Monster Beverage Corporation has been criticized for its policy of suing companies or groups that use the word "Monster", the letter "M", or the word "beast" in their marketing for trademark infringement. By 2019, the company has initiated over a thousand trademark cases that have been reviewed by the US court system or US Patent and Trademark Office’s (USPTO) Trademark Trial and Appeal Board , making them a poster child for trademark bullying which the USPTO defines as a trademark owner that uses its trademark rights to harass and intimidate another business beyond what the law might be reasonably interpreted to allow. Examples of such lawsuits include the aquarium hobbyist site MonsterFishKeepers. com, Bevreview. com, a beverage review site that published an unfavorable review of the Monster Energy drink and Rock Art Brewery from Vermont that marketed a beer named "Vermonster". That case was even brought up by Senator Patrick Leahy in a study of problematic trademark litigation tactics. Monster Beverage dropped the lawsuit against the microbrewery due to the adverse publicity the lawsuit generated.