  We study the possible phenomenology of a three-family Pati-Salam model
constructed from intersecting D6-branes in Type IIA string theory on the
T^6/(Z2 x Z2) orientifold with some desirable semi-realistic features. In the
model, tree-level gauge coupling unification is achieved automatically at the
string scale, and the gauge symmetry may be broken to the Standard Model (SM)
close to the string scale. The small number of extra chiral exotic states in
the model may be decoupled via the Higgs mechanism and strong dynamics. We
calculate the possible supersymmetry breaking soft terms and the corresponding
low-energy supersymmetric particle spectra which may potentially be tested at
the Large Hadron Collider (LHC). We find that for the viable regions of the
parameter space the lightest CP-even Higgs boson mass usually satisfies m_H <
120 GeV, and the observed dark matter density may be generated. Finally, we
find that it is possible to obtain correct SM quark masses and mixings, and the
tau lepton mass at the unification scale. Additionally, neutrino masses and
mixings may be generated via the seesaw mechanism. Mechanisms to stabilize the
open and closed-string moduli, which are necessary for the model to be truly
viable and to make definite predictions are discussed.
