  Searches for pair-produced scalar leptoquarks are performed using 20
fb$^{-1}$ of proton-proton collision data provided by the LHC and recorded by
the ATLAS detector at $\sqrt{s}=8$ TeV. Events with two electrons (muons) and
two or more jets in the final state are used to search for first
(second)-generation leptoquarks. The results from two previously published
ATLAS analyses are interpreted in terms of third-generation leptoquarks
decaying to $b\nu_{\tau}\bar{b}\bar{\nu_{\tau}}$ and
$t\nu_{\tau}\bar{t}\bar{\nu_{\tau}}$ final states. No statistically significant
excess above the Standard Model expectation is observed in any channel and
scalar leptoquarks are excluded at 95% CL with masses up to $m_{\mathrm{LQ1}}$
< 1050 GeV for first-generation leptoquarks, $m_{\mathrm{LQ2}}$ < 1000 GeV for
second-generation leptoquarks, $m_{\mathrm{LQ3}} < $ 625 GeV for
third-generation leptoquarks in the $b\nu_{\tau}\bar{b}\bar{\nu_{\tau}}$
channel, and 200 $< m_{\mathrm{LQ3}} < $ 640 GeV in the
$t\nu_{\tau}\bar{t}\bar{\nu_{\tau}}$ channel.
