Given the question that was asked, danielw's analog is still a good one, since there is also quite a difference between the (usually rather small) anticyclone created by a mature hurricane (to the right of its movement in the Northern Hemisphere) and a synoptic scale upper level blocking ridge.

One more correction - From the NHC Glossary:

" Fujiwhara Effect:
The tendency of two nearby tropical cyclones to rotate cyclonically about each other. "

Their is no Fujiwhara effect when one of the systems is an upper level low - however, the ULL can contribute to the motion of a tropical cyclone.
ED