Veterinary medicine

Hoyng ROKH Monegier and df-mp successful for Ceva in Bayer patent revocation

A Technical Board of Appeal at the European Patent Office has revoked a Bayer patent covering a veterinary medical preparation. The patent had previously been upheld by the EPO and was subject to extensive litigation throughout Europe. Now Ceva can market its competing product in countries previously subject to sales bans.

22 September 2020 by Amy Sandys

French patent courts The European Patent Office revoked a patent owned by German pharmaceutical company Bayer, which covers a medicine for piglets. But damage proceedings continue ©Countrypixel/ADOBE STOCK

The tale of two European leaders in animal health products has another twist. On 17 September, the EPO found a patent owned by German pharmaceutical company Bayer Intellectual Property, licensed to Bayer Animal Health, invalid for lack of inventive step. The Board of Appeal revoked the Bayer patent, overturning a first-instance decision from the EPO.

Pharmaceutical company Ceva Santé Animale is now able to resume sales of its veterinary preparation in some countries. Furthermore, the decisions could terminate some infringement proceedings brought against Ceva by Bayer.

US animal pharmaceutical company Elanco had recently completed its purchased of Bayer’s veterinary division. However, although the company was sold to Elanco, the patent still belongs to Bayer.

In a press statement shown to JUVE Patent, Elanco stated, “Elanco Animal Health is disappointed with the outcome of the hearing held at the EPO. Elanco disagrees with the conclusion and continues to assess the litigation in view of the decision.”

Treating piglets

In 2019, Bayer accused Ceva of infringing European patent EP 21 64 496 across several European jurisdictions. The patent covers a veterinary medical preparation for farm animals, with formulations containing so-called triazinone compounds and iron compounds.

The compounds treat anaemia and infections, particularly in piglets. Ceva had developed a similar veterinary product, called Forceris, obtaining a marketing authorisation in February 2019.

Consequently, Bayer brought infringement proceedings against Ceva. The company argued that Forceris infringed the patent which covers Bayer’s product Baycox Iron.

Wider than ever

As such, proceedings commenced in many European jurisdictions. However, over the past year courts have handed down various national decisions, with no consistent approach. Bayer enforced preliminary injunctions in Belgium, Denmark, Greece, Hungary, Spain, Sweden and Germany.

In Germany, Bayer successfully obtained a preliminary injunction before the Regional Court of Hamburg. But Bayer withdrew the claim after the appeal hearing at the Higher Regional Court at the end of August was not favourable to the company. Now, the markets where Bayer had enforced injunctions may go into damages proceedings. Furthermore, Bayer has filed oppositions to some Ceva patents.

Other European courts which denied Bayer a preliminary injunction against Ceva include France, the Netherlands, Finland, Romania, Bulgaria and Portugal. Litigation is ongoing in the UK and Italy. Interestingly, in the Netherlands, the District Court of the Hague presumed the patent invalid on the grounds of inventive step. It thus dismissed Bayer’s claims of infringement by Ceva (case ID: KG ZA 19-621).

Benoît Strowel, Hoyng ROKH Monegier, Bayer patent

Benoît Strowel

The EPO first granted Bayer Intellectual Property’s patent EP 496 in April 2017. After Ceva developed Forceris, it filed an opposition against Bayer’s patent. In July 2019, the EPO rejected the opposition, although the appeal board has now reversed this decision.

New firm in the mix

International boutique Hoyng ROKH Monegier acted for Ceva in the dispute, led by Paris managing partner Benoît Strowel. The relationship between Hoyng ROKH and Ceva it a relatively recent one, with Strowel gaining Ceva as a client in 2017.

In the opposition proceedings, Hoyng ROKH Monegier also worked alongside patent attorney firm df-mp, which acted for Ceva Animal Health. After being sued by Bayer, the company joined the opposition proceedings at the appeal stage as an intervener. Patent attorneys from firm df-mp opposed the patent independently from Ceva Sante Animale.

Düsseldorf boutique Rospatt Osten Pross led the appeal against Bayer’s preliminary injunction claim before the Higher Regional Court Hamburg.

Dorothea von Renesse, partner at Düsseldorf patent attorney firm König Szynka Tilmann von Renesse, represented Bayer. Stephan van der Vlugt, who was previously in-house at Bayer and is now a lawyer at Allen & Overy in Düsseldorf, was also present at the hearing. Sean Alexander represented Elanco, the new owner of Bayer’s previous veterinary arm.

For Ceva Sante Animale
Hoyng ROKH Monegier Véron (Paris): Benoît Strowel (partner)
Hoyng ROKH Monegier (Amsterdam): Peter Van Schijndel (partner); Jeroen den Hartog (patent attorney)

For Ceva Animal Health
df-mp Dörries Frank-Molnia & Pohlman (Munich): Ulrich Dörries, Elisabeth Greiner (partners; both patent attorneys)

For Bayer
König Szynka Tilmann von Renesse (Düsseldorf): Dorothea von Renesse
In-house: Stephan van der Vlugt (now Allen & Overy)
Elanco: Sean Alexander (senior assistant general counsel)