Patches for ODA X-4 - What after 12.1.2.12.0 ?

Hi

We are on ODA X-4 setup in a bare metal setup 2 node RAC

The patchset we are on is 12.1.2.0.0

Our next target for the patching is as below

12.1.2.5.0

and then

12.1.2.6.0

and then 12.1.2.12.0

Once we are on 12.1.2.12.0

Grid Home would be --> 12.1.0.2.170814

Database Home would be --> 12.1.0.2.170814

What we want to know is that once we get to the 12.1.2.12.0, we cannot patch our ODA any further since that ODA patch is the last patch offered for X4?

If yes, does that mean the max or highest patch set level we can be on for the GRID and ORACLE HOME would be as below