  We compare predictions for the spectral index and tensor-scalar ratio in
models of patch inflation with the WMAP three year data. There are three cases
of these models of inflation, which arise in the Gauss-Bonnet braneworld
scenario: Gauss-Bonnet (GB), Randall-Sundrum (RS), and 4D general relativity
(GR). We consider the large-field potential $V \propto \phi^p$ in both
commutative and noncommutative spacetimes, and find that in the cases of the GB
and GR patch cosmologies, the quadratic potential is observationally favored,
while the quartic potential is ruled out in most patches. Strong noncommutative
inflation is excluded in all cases because it leads to a blue-tilted scalar
spectral index.
