Supremum estimates for degenerate, quasilinear stochastic partial differential equations

We prove a priori estimates in $L_{\mathrm{\infty }}$ for a class of quasilinear stochastic partial differential equations. The estimates are obtained independently of the ellipticity constant $\epsilon$ and thus imply analogous estimates for degenerate quasilinear stochastic partial differential equations, such as the stochastic porous medium equation.