On December 4, 2014, the Senate invoked cloture on Griggsby's nomination by a 53–36 vote.[7] Later that day, her nomination was confirmed by a voice vote. She received her commission on December 5, 2014.[8] She took the oath of office on December 15, 2014.[9] Her service on the claims court terminated on July 23, 2021, when she was sworn in as an Article III district court judge.[8]
District court service
On March 30, 2021, President Joe Biden announced his intent to nominate Griggsby to serve as a United States district judge for the United States District Court for the District of Maryland.[10] On April 19, 2021, her nomination was sent to the Senate. President Biden nominated Griggsby to the seat vacated by Judge Catherine C. Blake, who assumed senior status on April 2, 2021.[11] On May 12, 2021, a hearing on her nomination was held before the Senate Judiciary Committee.[12] On June 10, 2021, her nomination was reported out of committee by a 16–6 vote.[13] On June 16, 2021, the United States Senate invoked cloture on her nomination by a 57–41 vote.[14] Her nomination was confirmed later that day by a 59–39 vote.[15] She received her judicial commission on July 20, 2021.[8] She was sworn in on July 23, 2021.[16] She is the first woman of color to serve as a judge on the district court in Maryland.[17]