Try pairing to a fur that is dominant to the Ocicat Chocolate. I've been using Ocicat Tawny with one of mine and get the Brown & White Patch fur every time... so a Siamese Flame, Snowshoe Red, Abyssinian Fawn, or Ocicat Tawny should work.
Tad is exactly right... it is a coin toss so don't get discouraged.
Edit: Just checked Saga's Pedigree Dominance order and see that Brown & White Patch is dominant to Cream & White Tabby, so you have a pretty wide range of furs that lie between the Oci Chocolate and Brown & White Patch and any of them should allow you to achieve your goal.