by adin55 » Mon Apr 04, 2011 11:02 pm
Every pending patent has an application number. It is unique. You could search at http://www.patsnap.com/patents/index , select USA database, choosing "Application Number" then enter the relevant value in the input box, then click "Run Search", you will get the result, then repeat above operations but select USB database, if you get a result, then this is not a pending patent, it is issued; if there is no result returned, this is a pending patent or a rejected patent. Have a try!