Recently the U.S. Patent and Trademark Office (USPTO) rejected Apple's application to trademark "iPad Mini", which seemed rather obvious since it essentially is just a smaller iPad. However, the USPTO withdrew its statement and decided to reconsider Apple's application. Apparently "upon further review of the application", they decided the word "Mini" does not simply define a physical characteristic of the goods. However, they also mentioned that Apple must waive any exclusive rights of the term "Mini", and as long as Apple does not provide the necessary disclaimer within six months, the USPTO will refuse to register the trademark.
Despite what we find to be "obvious" in our dictionary, laws dictating the government, especially in patent litigation, must take extreme measures to define what is "obvious". As Professor Lavian mentioned, in law schools there are entire classes dedicated to the word "obvious". While I first found the USPTO's rejection to be common sense and thought Apple was just pushing it, this withdrawal reminded me how detail oriented the legal system is, and the process of defining the word "Mini" and its implications can affect the mobile market.
http://news.idg.no/cw/art.cfm?id=2E2FEECA-A397-5EC1-C5331687F6B72DB4