(PILA)

1 As to form, con­tracts are val­id if they meet the re­quire­ments set out in the law ap­plic­able to them or in the law of the place where they were con­cluded.

2 The form of a con­tract con­cluded between per­sons who are loc­ated in dif­fer­ent states is val­id if it meets the re­quire­ments set out in the law of one of those states.

3 The form of a con­tract is gov­erned ex­clus­ively by the law ap­plic­able to the con­tract it­self when, in or­der to pro­tect a party, such law re­quires com­pli­ance with a spe­cif­ic form, un­less that law al­lows the ap­plic­a­tion of an­oth­er law.