When I signed up for Twitter in December 2012, the username @monicamallon was taken (by an egg) so I came up with the username @justsomevlogger. After years of waiting, in April of this year, I decided that I would do whatever it took to get my coveted Twitter handle. I contacted Twitter a few times but they said that they would not release the username to me unless I had a trademark. So on April 18th, I filed for a class 35 trademark for the name MONICA MALLON. And then I waited until my trademark was finally approved on November 22nd. I immediately contacted Twitter through their trademark report form and explained the situation. I provided them with a copy of my trademark certificate and explained that the user @monicamallon had never tweeted, was following zero users, and had shown no signs of activity in years. Twitter got back to me in a few days and said that they could release the username to me. So on December 5th, I officially became @monicamallon.
Feel free to contact me if you have any other questions!