Back in December, CBS and Paramount threw cold water on the grand plans of Axanar Productions, a company formed by Star Trek fans, to produce what would have been one of the most elaborate and professional-looking installments of fanfic in the Star Trek universe. Now, the Star Trek rights holders are back with an amended complaint (PDF) that lists many of the specific instances in which Axanar Productions has included something “substantially similar” to a copyrighted element in Star Trek, including races like Klingons and Vulcans, the cowl-neck uniform that Majel Barrett wore as the Enterprise’s first officer in The Original Series episode The Cage, and the concept of “Stardate."

Axanar Productions wasn’t too worried about copyright infringement when it set out to make its movies, which currently include a 20-minute prequel called Prelude to Axanar and a forthcoming feature-length film called Axanar. After all, fans had been making Star Trek fanfic for decades, and CBS had either encouraged it or turned a blind eye.

But that tacit approval stopped after Axanar Productions was able to raise hundreds of thousands of dollars on both Kickstarter and Indiegogo. Axanar’s writer and producer, Alec Peters assured CBS and Paramount that he and others working on the project would not make any profit—all the money they raised would go directly to making Axanar.

"Axanar is an independent project that uses the intellectual property of CBS under the provision that Axanar is totally non-commercial,” the production company wrote on its website. "That means we can never charge for anything featuring their marks or intellectual property and we will never sell the movie, DVD/Blu-ray copies, T-shirts, or anything which uses CBS owned marks or intellectual property."

But that wasn’t acceptable for CBS and Paramount, which demanded injunctive relief barring Axanar Productions from distributing Prelude to Axanar and Axanar, as well as "up to $150,000 for each separate Star Trek Copyrighted Work infringed.”

Some 57 instances of infringement are listed in CBS and Paramount’s new amended complaint, which notes that other similarities may surface in the future. These similarities are divided into categories like characters (including Garth of Izar and Vulcan Ambassador Soval), races and species from Vulcans and Romulans to Tellarites, costumes (see: Uniform with a Gold Shirt and “Triangular medals on uniform”), settings like the planet Axanar and the Klingon planet Qo’noS, as well as spacedocks and the Starship Enterprise, logos like the Federation logo, and plot point similarities including the concept of dilithium, phasers, and the Klingon Empire.

The complaint also points to copyrighted dialogue as infringement. Mentioning transporters and “beaming up,” warp drive, or speaking Klingon language are items listed in the amended complaint.

Finally, CBS and Paramount say that Axanar Productions ripped off their copyrighted works’ “mood and theme.”

"The mood and theme of Star Trek as a science fiction action adventure first appeared in The Original Series episode “The Cage” (Reg. No. PA 314-430), and has appeared in all subsequent episodes of The Original Series and other derivative Star Trek Copyrighted Works,” the complaint notes.

CBS and Paramount have requested a jury trial.

In a post on Tuesday morning, Jonathan Lane, a writer connected with Axanar Productions, wrote on the production company’s blog that CBS and Paramount should stand down from their lawsuit because Axanar and its ilk are “free commercials” for the Star Trek franchise.

"The last thing a studio should do right now is to sue the folks who are making free commercials for them…especially 6-figure and 7-figure commercials,” Lane wrote. "And let’s take a look at how the other studios are handling this. Disney is embracing Star Wars fan films and reaping all the benefits while not suffering any kind of loss of interest or perceived value of their intellectual property. Warner Brothers is happy to have fan-made Batman, Superman, Wonder Woman, and Nightwing videos on YouTube. If CBS and Paramount remove Star Trek fan films from the online social media equation, they’re just leaving more room for the competition to expand into that vacuum while Star Trek goes dark and silent."