Anheuser-Busch InBev have lost their legal bid to stop the Czech brewery Budvar using the name Budweiser in the UK with the Supreme Court ruling that Budvar can continue using the name here alongside AB-InBev's beer (in the US, they have to sell it as Czechvar).
I think the best word to describe AB-InBev's legal attempts to stop Budvar using the name Budweiser is chutzpah. Front, nerve and brass neck too. Budweiser means "from Budweis", the German name for České Budějovice, the Bohemian city where beer has been brewed since the 13th century. Adolph Busch started brewing his Budweiser beer in St Louis in 1876.
It's not as if anyone is going to confuse the two, certainly not if they drink them.