Maiwald GmbH in Munich has achieved an important victory for its client Acetate International LLC at the European Patent Office. Acetate International LLC is part of the Celanese group which has a long history of producing cellulose acetate products for commercial applications, including filters for tobacco products.
On 14 December 2022, the Opposition Division of the European Patent Office rejected Cerdia International GmbH’s opposition against the European patent EP 2 773 230 B1 and maintained the patent as granted. The decision is open to appeal for Cerdia International GmbH. The patent relates to an innovative filter comprising a specific high denier per filament and low total denier cellulose acetate tow band.
Patent attorneys Dr Ulrike Herr, Dr Derk Vos and Dr Berthold Lux represented Acetate International LLC before the European Patent Office.
Maiwald is a leading law firm in the field of intellectual property rights. With approximately 240 employees in Munich and Düsseldorf, Maiwald comprehensively supports companies in securing, defending and enforcing their intellectual property rights. Clients include start-ups, small and medium-sized enterprises and industrial groups in a wide range of industries. Approximately 80 patent attorneys and attorneys-at-law work internationally for clients in the fields of pharmaceuticals & biotechnology, organic chemistry & polymers, inorganic chemistry & building materials, food & agriculture, electrical engineering & mechanical engineering, communication & information technology, mobility & energy, displays & light, measuring & process engineering as well as medical technology & imaging. Maiwald advises and represents clients with regard to patents & utility models, supplementary protection certificates, trademarks & designs, copyright law, competition & antitrust law, compliance, contract law, employee invention law, pharmaceutical law, data protection and plant variety protection. The magazine Managing Intellectual Property named Maiwald “European SPC/Patent Prosecution Firm of the Year 2021”, “European Cross-Border Patent Litigation Team of the Year 2021” and “German Impact Case of the Year 2021”.