Final results of the search for the Standard Model Higgs boson are presented for the data collected by the L3 detector at LEP at centre-of-mass energies up to about 209 GeV. These data are compared with the expectations of Standard Model processes for Higgs boson masses up to 120 GeV. A lower limit on the mass of the Standard Model Higgs boson of 112.0 GeV is set at the 95\% confidence level. The most significant high mass candidate is a $H\nu\overline{\nu}$ event. It has a reconstructed Higgs mass of 115 GeV and it was recorded at $\sqrt{s}=206.4$ GeV.