Posts Tagged: "US Patent Classification System"

This case had been made Special on the Patent Prosecution Highway in October of 2013 because of a favorable Written Opinion from a PCT Searching Authority. For a Special case, USPTO’s case management system normally starts ringing an alarm on the Examiner’s desk after a couple of months. So we should have seen an Office Action at least a month ago, maybe two months ago. But that only works if the case has been assigned to an Examiner. Often the USPTO first assigns the case to a SPE and then it is left to the SPE to figure out which Examiner in the SPE’s art unit should actually examine the case. This case got assigned to the SPE in a particular art unit. Let’s call him “SPE V”. It seems that SPE V decided that this case had been misclassified and should not have gone to his art unit. So he tried to get rid of it.

I have found it helpful to think about patent classifications as being large buckets with subclassifications being little buckets within the larger classification buckets. There are currently more than 450 classifications and over 150,000 subclasses. According to the USPTO, “A class generally delineates one technology from another. A Subclass delineates processes, structural features, and functional features of subject matter encompassed with the scope of the class.” It is also important to realize that although every patent has only one primary classification (class and subclass) it may include others as applicable to the patent.

What these numbers tell you is if your application is in Art Unit 3622 or 3689 you are in for a long wait to obtain a patent. The numbers also show that if you carry the case all the way through appeal there is quite a high success rate for applicants; 66.7% when in Art Unit 3622 and 71.4% when in Art Unit 3689. It is hard to know for sure what is going on in Art Units 3622 and 3689, but one number jumps out at me as particularly alarming. In Art Unit 3689 nearly 4 out of 5 of the applications they allow require the applicant to hop on the appeal track.