Wigdor has been a leading attorney throughout the #MeToo movement who is best known for bringing cases against Fox News, Bill O'Reilly and Harvey Weinstein.
On Friday, Biden appeared for an 18-minute grilling on "Morning Joe", the place he strenuously denied the allegation.
Reade said she was handing a gym bag to Biden in a corridor near the Senate office when he pushed her against a wall and digitally penetrated her.
Wigdor's announcement comes one day after CNN issued a report questioning Reade's education credentials and a statement that at least two California defense attorneys and a district attorney's office are now reviewing criminal cases Reade gave expert witness testimony in.
Reade testified under her old name Alexandra McCabe as a government witness for almost a decade in Monterey County.
Former Vice President Joe Biden speaks during the First State Democratic Dinner in Dover Del
Antioch University told the AP that Reade never obtained a diploma from the school, and Reade herself could not produce evidence of the degree she claims to have earned there. Karen Hamilton, an Antoich spokesperson, has disputed this arrangement to the Times.
"The Joe Biden I do know, I've by no means seen something [or] believed that he would do something like this till you persuade me in any other case", Graham advised host Sean Hannity Friday night. Additionally, last month a clip from "Larry King Live" in August 1993 resurfaced in which a woman, who Reade claims is her mother, speaks about problems her daughter had with a prominent senator, saying she has a story to tell but opted not to go to the press out of respect for her former boss. "We also believe that to a large extent Ms. Reade has been subjected to a double standard in terms of the media coverage she has received". Even if Reade is telling the truth, Pollitt argues, liberals should vote for Biden because "We do not have the luxury of sitting out the election to feel morally pure or send a message about sexual assault and #BelieveWomen".
Newsweek reached out to the Biden campaign but did not receive comment before publications.
Republicans have cried foul, saying Biden and different Democrats now defending him have been fast to pounce on Dr. Christine Blasey Ford's sexual misconduct allegations towards then-Supreme Courtroom nominee Brett Kavanaugh.