The court then ordered the Judicial and Bar Council (JBC) to proceed with its nomination process and subsequently submit its shortlist of nominees for the Chief Justice to Arroyo.

[24] Four days later, Vicente Millora, a former president of the Integrated Bar of the Philippines (IBP), filed a petition at the Supreme Court questioning the constitutionality of the pending trial, asking for a temporary restraining order (TRO), and to declare the articles of impeachment null and void.

Millora contended that the impeachment case did not go through constitutional means as it was passed with "undue haste, railroaded, fast-tracked, and signed but not sworn to by the 188 respondent lawmakers.

[26] Additional petitions questioning the constitutionality of the impeachment were filed by Vladimir Cabigao, Danilo Lihaylihay, Oliver Lozano, and Allan Paguia and Homobono Adaza.

[29] In a press conference, the prosecution team revealed that Corona owns a high-end penthouse condominium unit in Bellagio, Fort Bonifacio, Taguig worth ₱14.51 million in 2009.

"[36] On the morning of January 16, the first day the Senate was set to receive the prosecution and defense teams, Corona stated in a speech that "there is no turning back" on the impeachment trial.

[38] Sotto then moved to tackle a motion filed by private lawyer Fernando Perito to cite the prosecution for indirect contempt on their press conference stating that Corona had ill-gotten wealth.

[43] The following are the SALNS filed by Chief Justice Corona from 2002 to 2010 with assets declared during those years:[45][46] The prosecution presented Taguig–Pateros Register of Deeds Randy Rutaquio.

Ng was not able to answer how much was the price of the Bellagio penthouse; private prosecutor Joseph Joemar Perez moved to subpoena Megaworld's senior vice president for marketing on the next hearing.

[52] Securities and Exchange Commission (SEC) Director Benito Cataran testified on Corona's ₱11 million loan from his wife's Basa-Guidote Enterprises, Inc. (BGEI) in 2003.

[53] Ayala Land assistant vice president Nerissa Josef testified on the Corona family's purchase of property at the Columns condominium in Makati.

The prosecution asked Henares on Corona's under-declarations in his SALNs as compared to his tax returns; she enumerated properties that were not listed, and discrepancies in net worth.

[56] Corona filed a petition for certiorari that sought the Supreme Court to issue a temporary restraining order on the impeachment trial, citing grave abuse of discretion by the Senate.

Corona, on his first petition, also asked the court to prohibit the implementation of the Senate's subpoena to the bank managers, and to prevent them from testifying and submitting documents; he also asked to stop the presentation of evidence pertaining to paragraphs 2.3 and 2.4 on the article alleging his ill-gotten wealth, and that to declare the impeachment complaint null and void ab initio, and that to make permanent the previous temporary restraining order.

The prosecution presents PSBank president Pascual Garcia III, with private prosecutor Demetrio Custodio stating the purpose of illustrating that Corona owns ten accounts.

"[60] BPI Ayala branch manager Leonora Dizon testified that Corona owns a checking account, and had an ending balance of more than ₱12 million as of December 2010.

Majority floor leader Tito Sotto said, quoting a report from the Sergeant-at-Arms, that no small lady was seen from their CCTV; Enrile then gave the prosecution 24 hours to explain how they acquired the bank records.

[61] Senate President Enrile stated that the Supreme Court had no jurisdiction upon the impeachment trial; he also assumed responsibility for the issuance of the subpoena that was based on the prosecution's supposedly fake bank records.

[65] PSBank president Pascual Garcia III testified that the Bangko Sentral ng Pilipinas (BSP; the central bank) and the Anti-Money Laundering Council (AMLC) audited several accounts in that branch, including Corona's.

[68] Secretary of Justice Leila de Lima testified that Corona had influenced the court in allowing the temporary restraining order relieving the prohibition of former president Gloria Macapagal Arroyo to leave the country.

Using the dissenting opinion by associate justice Maria Lourdes Sereno, de Lima said that Corona corrected the draft of the decision, and instructed Supreme Court spokesperson Midas Marquez to mislead the public by stating that the restraining order was still in effect even if Arroyo was not able to abide by it.

He narrated that Speaker Feliciano Belmonte Jr., in a caucus on December 12, said that Corona should be impeached due to his closeness with Representative Gloria Macapagal Arroyo.

[92] The prosecutors disapproved of the plan, saying that Corona cannot compare himself to other government officials since as Chief Justice, he should be held up to a higher standard than other public officers.

Carlo Alcantara, the acting register of deeds of Quezon City, testified on Corona's Ayala Heights and La Vista properties that were transferred to other people.

Senators Edgardo Angara, Alan Peter Cayetano, Pia Cayetano, Franklin Drilon, Francis Escudero, Jinggoy Estrada, TG Guingona, Gregorio Honasan, Panfilo Lacson, Lito Lapid, Loren Legarda, Serge Osmeña, Francis Pangilinan, Koko Pimentel, Ralph Recto, Bong Revilla, Tito Sotto, Antonio Trillanes, Manny Villar and Senate President/Presiding Officer Juan Ponce Enrile voted for conviction.

[101] Following the allegations, Drilon confirmed that ₱50 million was released to the senators as part of the Priority Development Assistance Fund, but denied it was intended to be a bribe.

[103] Following the revelations, budget secretary Florencio Abad confirmed the release of an additional ₱1.107 billion in pork barrel funds to senators who voted to convict Corona.

[105][106] Senator Joker Arroyo, who voted to acquit Corona, denied receiving the alleged 'incentive' funds, and accused the Aquino administration of "outright bribery, right at the presidential doorstep".

[107] Santiago encouraged Supreme Court litigation regarding the DAP, saying that the program was unconstitutional as it allowed the executive branch of government to "play favorites" among senators.

[109] On January 20, 2014, Senator Ramon Bong Revilla revealed that he was convinced by President Benigno Aquino III to convict the chief justice.