Simply because trademarks are registered with governments, some countries or trademark registries may well identify a mark, while others may have identified that it is actually generic and not allowable as a trademark in that registry. For example, the drug acetylsalicylic acid (two-acetoxybenzoic acid) is better known as aspirin https://directory4search.com/listings13340648/a-simple-key-for-barnes-and-noble-online-book-search-unveiled