In recognition of his eminence, the Kerala High Court had engaged services of Sri Devan Ramachandran to be its advocate/counsel when he was just 34 years, making him the youngest one to do so till date.

[6][7] Justice Devan Ramachandran, for a Division Bench, had held that the use of the phrase “deaf and dumb” is ethically wrong and technically incorrect, being relic of medieval era.

[10] This is after, in an earlier significant judgment, Justice Devan Ramachandran has declared the use of disrespectful and abusive words and vocatives by Police against citizens to be “relics of the colonial subjugatory tactics” and hence unconstitutional.

[15][16][17] Justice Devan Ramachandran, speaking for a Division Bench, granted divorce to a woman “in a loveless relationship, reduced to feelings of self-worthlessness and despondency."

[21][22][23] In 2022, Justice Devan Ramachandran was called upon by young girl students to decide if the “curfew” imposed on them to leave and enter their hostels were justified.

Justice Ramachandran, in a landmark judgment held that “no gate, no lock, no bolt, can set upon the freedom of the kind of a girl” and ordered relaxation of the timings of all student hostels in Kerala.

[24][25] In a move to make Kerala an investor friendly destination, Justice Ramachandran has held the long continuing ill practice of Trade Unions to extort money as gawking charges (called “nokkukooli” in Malayalam) illegal.

[37][38][39] However, in the meanwhile a young person died in a pothole and Justice Ramachandran took note of it suo Motu and issued urgent directions, at the same time apologising to the victim's family for the systemic failure that led to the accident.

[40][41][42] Reacting to the death of a pedestrian by electrocution from a snapped overhead line on a public street, Justice Devan initiated a suo motu case against the Electricity Board and issued directions to it to avert such in future.

[56] Justice Devan Ramachandran ruled, again in a first of its kind judgment, in November 2017, that a minister whilst he is holding such a position cannot file a case against one's own government or its functionaries.

Justice Devan, who penned the judgment sitting in Division Bench, directed that the legal education imparted across the country should be done with a trajectory (vision) towards the future.