Lilium has announced 37 new patent applications which have been published by the European Patent Office (EPO).

These are engineering inventions for the core technology around the Lilium Jet, spanning several domains: Energy, Propulsion, Structures and Interior, Avionics and Custom Electric, with Lilium focusing more than 70% of its patents on Energy and Propulsion.

These patents are part of a batch of 50 patents Lilium filed throughout 2021, with more to come in the next year. 

If accepted, these applications with the EPO will secure Lilium’s intellectual property in Europe, and Lilium is also extending patents in other key markets, including the US and China, to protect its inventions.

Lilium co-founder and CEO Daniel Wiegand said: “We are excited that Lilium is creating and protecting the radical engineering innovations that make its Jet unique. 

“The applications serve as a testament to our engineers’ ingenuity and commitment to pushing the limits of technology, and reinforcing Lilium’s place at the forefront of eVTOL development. 

“These patent filings move us one step closer to commercialization of the Lilium Jet, but they also stand to strengthen innovation in the aviation industry as a whole, with areas like energy needing constant investment in novel and sustainable systems and technologies.”

Last month, Lilium successfully completed the second Design Organisation Approval (DOA) audit by the European Union Aviation Safety Agency (EASA), which achieves type certification of an aircraft, and completion of the audit demonstrates that Lilium is following the rigorous design processes agreed with EASA. 

Two further EASA DOA audits will be required for Lilium to receive the organisational approval, which complements the certification and development program, with the fourth and final EASA DOA audit and granting of EASA DOA anticipated to coincide with type certification of the Lilium Jet. 

Earlier last month, Lilium submitted a full set of ‘Means of Compliance’ proposals to EASA for type certification of its Lilium Jet to prepare the way for the next phase of type certification. 

EASA’s type certification process consists of technical familiarisation and certification, establishment of the certification programme and compliance demonstration, with Lilium completing the first step and receiving its EASA certification basis (CRI-A01) in 2020.