[1] In 2008, he was nominated by the Government of Ireland to be one of three candidates to be put forward for election to the European Court of Human Rights.
[14] He heard a constitutional challenge of electoral gender quotas legislation in 2016 from a Fianna Fáil candidate who was not selected for election.
[15] He presided over a case initiated by Seán Gallagher seeking damages from RTÉ for airing a misleading tweet during a televised debate during the 2011 Irish presidential election.
[16] In 2018, he accused lawyers of professional misconduct by omitting certain details from their arguments before him in a trial involving the removal order of a Polish citizen from Ireland.
[19] In May 2019, Keane had 22 cases awaiting judgment for at least two months, the highest amount among his High Court colleagues.