The defamation case currently centers on a procedure known as discovery, in which both sides provide internal or other records that can serve as evidence.
BBC lawyers said the corporation produced 87,000 pages of documents, while they said Trump’s side published a “fictitious production” of just 735 pages, which they said were “news articles” and other material “taken from the Internet.”
BBC lawyer Charles Tobin said this meant the discovery process was “completely one-sided”.
Trump lawyer Alejandro Brito called the BBC’s requests for documents “oppressive” and “enormous.”
He also opposed the BBC’s requests for recordings of Trump’s conversations with aides related to the Capitol riot, as well as subpoenas issued to federal agencies and former officials.
Trump’s legal team has accused the BBC of engaging in a “fishing expedition” with subpoenas to “harass” former officials.
Much of Trump’s lawyers’ argument centers on a letter sent by BBC chairman Samir Shah to the US president last November.
In the letter, Shah apologized for the Panorama clip, which he said inadvertently created “the erroneous impression that President Trump made a direct call for violent action.”
Brito called the letter a “concession” and a “confession” by the BBC.
The BBC has already sought to have the case thrown out, arguing that the documentary was not broadcast in the US. The court has not yet ruled on this matter.