"We will vigorously defend it," a spokesperson from Warner Bros. tells TheWrap.
Ed Helms plays a grown-up Rusty Griswold in the update of the classic 1980s franchise
New Line Cinema's upcoming horror film is a spin-off of "The Conjuring"
New Line's "Dan Mintner: Badass for Hire" project has been in works since 2008
The studio has offered the comedian the role, but negotiations are still pending
Amir Blumenfeld, David Burtka, Richard Riehle and Fred Melamed have also joined the cast of the Christmas-themed comedy
Filmmaker bows out as project drags on, but will still co-write MGM-New Line's adaptation of J.R.R. Tolkien classic
Overwhelming 86 percent of reviewers panned sequel
In-house Warner Bros. label gets rebranded
Comedy would focus on next generation of Griswolds.