Archer wins competitive bid process and acquires Lilium’s portfolio, including patents for its ducted fan technology

Archer Aviation has won the competitive bid process to acquire Lilium GmbH’s portfolio of ~300 advanced air mobility patent assets for €18 million.

The portfolio from the German eVTOL OEM, whose Board filed for self-administration 12 months ago, included patents relating to key innovations in high-voltage systems, battery management, advanced aircraft design, flight controls, electric engines, propellers and ducted fans.

Lilium was founded in 2015 and spent more than $1.5 billion developing advanced technologies related to eVTOL aircraft. For Archer, it says the acquisition strengthens its position in next-generation electric aviation and reinforces its commitment to ensuring the USA leads the way when it comes to critical eVTOL technology.

Adam Goldstein, Founder and CEO of Archer, said: “Lilium’s pioneering work advanced the frontier of eVTOL design and technology, and we’re excited to bring their cutting-edge technologies into the fold at Archer as we advance our product roadmap.”

Through this purchase, Archer gains key enabling technologies that bolster its current platforms, including what is believed to be the leading patent portfolio on ducted fan technology in the world.

In July 2025, the U.S. Department of Transportation and Federal Aviation Administration announced the modernization of the special airworthiness certification (MOSAIC) final rule to drive innovation across the light-sport sector.

Archer believes Lilium’s ducted fan technology could unlock future development in both the light-sport and regional air mobility sectors.