Conversation so far:
When did the lineup of Blink-182 change
Hoppus and Barker of Blink-182 decided to continue on without DeLonge in March 2015.
what were the lineup changes Blink-182 made
Hoppus and Barker of Blink-182 decided to continue on without DeLonge.
who did Blink-182 replace DeLonge with
Hoppus and Barker enlisted Alkaline Trio vocalist/guitarist Matt Skiba to fill in for three Blink-182 shows in March 2015.
what happened with Blink-182 after the 3 shows in which Matt Skiba replaced DeLonge
Hoppus and Skiba had been wanting to work together with Blink-182 musically for several years, so he was the first and only person considered for the role.
did Blink-182's lineup change work well for them
After legal battles with DeLonge were worked out, Skiba joined Blink-182 as an official member.

Question: what where the legal battles for
Self-contained rewrite: what where Blink-182's legal battles with DeLonge for