  Fermi liquid theory is used to generate the Ginzburg-Landau free energy
functionals for unconventional superconductors belonging to various
representations. The parameters defining the GL functional depend on Fermi
surface anisotropy, impurity scattering and the symmetry class of the pairing
interaction. As applications I consider the basic models for the
superconducting phases of UPt$_3$. Two predictions of Fermi liquid theory for
the two-dimensional representations of the hexagonal symmetry group are (i) the
zero-field equilibrium state exhibits spontaneously broken time-reversal
symmetry, and (ii) the gradient energies for the different 2D representations,
although described by a similar GL functionals, are particularly sensitive to
the orbital symmetry of the pairing state and Fermi surface anisotropy.
