AbbVie Inc. has settled its Delaware patent infringement suit against Boehringer Ingelheim, granting the German drugmaker a nonexclusive license to begin selling a biosimilar of its $20 billion immunosuppressant Humira in 2023.

The companies announced the settlement with a pair of press releases Tuesday. Under the agreement, Boehringer will to pay AbbVie royalties for licensing its Humira patents and agreed to acknowledges the validity and enforceability of the patents, AbbVie said.