  Since 1969, Lunar Laser Ranging (LLR) data have been collected by various
observatories and analysed by different analysis groups. In the recent years,
observations with bigger telescopes (APOLLO) and at infra-red wavelength (OCA)
are carried out, resulting in a better distribution of precise LLR data over
the lunar orbit and the observed retro-reflectors on the Moon. This is a great
advantage for various investigations in the LLR analysis. The aim of this study
is to evaluate the benefit of the new LLR data for the determination of
relativistic parameters. Here we show current results for relativistic
parameters like a possible temporal variation of the gravitational constant
$\dot{G}/G_0 = (-5.0 \pm 9.6) \times 10^{-15} \, \mathrm{yr}^{-1}$, the
equivalence principle with $\Delta\left(m_g/m_i\right)_{\mathrm{EM}} = (-2.1
\pm 2.4)\times10^{-14}$ and the PPN parameters $\beta-1 = (6.2 \pm 7.2) \times
10^{-5}$ and $\gamma-1 = (1.7 \pm 1.6) \times 10^{-4}$. The results show a
significant improvement in the accuracy of the various parameters, mainly due
to better coverage of the lunar orbit, better distribution of measurements over
the lunar retro-reflectors, and last but not least, higher accuracy of the
data. Within the estimated accuracies, no violation of Einstein's theory is
found and the results set improved limits for the different effects.
