Justice Sabhahit said, Speaker KG Bopaiah's ruling disqualifying the BJP MLAs was in accordance with Para 2 (1) (a) of the Tenth Schedule of the Constitution.
"High Court's decision is a huge victory for us. We won a constitutional battle," said K Diwakar, Yeddyurappa's advisor.
Earlier, the Karnataka speaker K G Bopaiah disqualifed 16 rebel MLAs under the anti-defection law hours ahead of the trust vote on Oct 11.
Challenging the order of Speaker KG Bopaiah, rebel MLAs filed a petition in court.