Why would my patent not be granted?

Why would my patent not be granted?

Your patent might not be granted because your invention isn't new and you'd be surprised at how many things have already been thought of and appear in patent searches. It also might not be granted because your invention isn't considered to have an inventive step. In other words, it's considered to be obvious over what's already known. It could be that your patent wouldn't be granted, because your patent specification doesn't describe your invention in enough detail for the invention to be carried out, so you fail on four more requirements. There are any number of reasons why your patent might not be granted. It's important to get good advice so that you don't fall foul of those potential traps.