According to Patently Apple, the letter was mailed to Apple on January 24, but has only been made public the last few days arguing that the term 'mini' is 'merely descriptive.'

The 'iPad mini' has been denied by Examining Attorney Lee-Anne Berns claiming that the specimen that Apple supplied - the product website - shouldn't have been used, even though Apple has used this previously without denial.

Apple were granted the trademark for 'iPad' in March 2012 in the U.S. and reached a $60 million settlement later in the year for use in China.