  The LHC potential for discovering doubly-charged vector bileptons is
investigated considering the measurable process $p p$ $\rightarrow$
$\mu^{\mp}\mu^{\mp}\mu^{\pm}\mu^{\pm} X$. The study is performed assuming
different bilepton and leptoquark masses. The process cross-section is
calculated at leading-order using the \textsc{Calchep} package. Combining the
calculation with the latest ATLAS experiment results at a center-of-mass energy
of 7 TeV, bounds on bilepton masses based on LHC data are derived for the first
time. The results exclude bileptons masses in the range of 200 GeV to 500 GeV
at 95\% C.L., depending on the leptoquark mass. Moreover, minimal LHC
integrated luminosities needed for discovering and for setting limits on
bilepton masses are obtained for 13 TeV center-of-mass energy. Simulated events
are passed through a fast parametric detector simulation using the Delphes
package.
