When the patch is released after the next release, which is the case with 188.8.131.52 and 14.3, the recommendation we have is not to apply the patch. The reason being is that it might contain fixes that are different from the ones contained in the new release.
Now, for your situation : The Release Notes say:
Installation of 184.108.40.206 is recommended.
This means that the install of patch 13 is recommended but not required.
You can do either of the following:
---Stay on your current patch level and directly upgrade to 14.3
---Raise a support issue for us to provide patch 13 to you
Please let me know for any questions.
Principal Support Engineer