I have an application that is now on its fifth rejection. In some cases, I have made amendments in light of the prior art, and in all cases, I have presented rebuttals for arguments raised by the examiner.
There are two main earlier patents presented as the core for the 103 rejections, but all but the first rejection subsequently rely on new patents or applications that are introduced for the first time in each rejection. Each rejection also starts with the phrase "The applicant's arguments have been fully considered ... but are moot in view of the following new ground of rejection."
As a result, I am now up to seven items in the prior art list (but in any one rejection only the core two and one new item are used).
Is there a point at which you can say, "You've had X shots - now you're out of bullets" or can this process go on forever? Or in other words, when can you argue that there are so many different 103 rejections with so many different prior art materials that surely the invention is not obvious?
Does anyone have any other advice on how to end this (other than abandonment)?