Most of the world famous trademarks are the logos of international brands. The most renowned logo trademark is Apple. This brand possesses the greatest worth in the manufacture of digital devices. To keep a brand outshine, you need to uphold the validity of your trademark. Just as Singapore trademark renewal period, every state specifies a limit for trademark renewal to preserve its validity. The other world-acclaimed and credible logo trademarks are Polo, Nike, Adidas, Rolex, Kodak, Mac, L’Oreal, HP, McDonalds, Toyota and Google. What do you think is the reason behind their worldwide fame?