A bench of Acting Chief Justice Gita Mittal and Justice C Hari Shankar concluded the hearing during which senior lawyer Sanjay Jain, appearing for the Centre, opposed Karnan's plea saying the apex court has given ample opportunity to him to defend himself.
"The challenge (to the Act) is uncalled and unwarranted. This exercise is misconceived and it should not be entertained," he said.
Karnan, in his petition filed through advocate Mathews J Nedumpara, has also sought a declaration from the high court that the apex court's May 9 sentencing order and further proceedings under it were "unconstitutional and void" as the principles of natural justice were allegedly not followed.
It had asked the central government to also place on record the apex court rules that said only an advocate-on- record could file petitions in the top court.
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The lawyer had argued that the order of May 9 against Karnan holding him guilty of contempt of the apex court was a "nullity" in law as it was passed "without jurisdiction" and "authority of the law".
The apex court by its May 9 order had sentenced Karnan to six months in jail.
Nedumpara had, however, argued that the order by a seven-judge apex court bench, headed by Chief Justice of India J S Khehar, "resulted in his (Karnan) removal from office for all practical purposes".
The plea has also challenged certain rules of the apex court which required that petitions in the Supreme Court be only filed through an advocate-on-record.
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