Case No. S2022_010 | ‘Sitagliptin Metformin’
👉 Order of 16 January 2023
👉 Judgment of 27 March 2023
Sitagliptin is one of the best selling treatments for type II diabetes; it is sold by MSD as Januvia® (Swissmedic market authorization no. 57863). Sitagliptin is often used in combination with Metformin, a first line anti-diabetic medication. The fixed-dose combination is sold by MSD as Janumet® (Swissmedic market authorization no. 58450).
Putting it simple, metformin reduces the absorption of sugar from the stomach, reduces the release of stored sugar from the liver, and improves the use of sugar in the body. Sitagliptin helps to make the pancreas release more insulin. It also signals the liver to stop producing sugar when there is too much sugar in the blood.
MSD’s full year 2022 financial report acknowledges «lower sales of Januvia and Janumet, primarily reflecting lower demand in Europe as a result of generic competition.» Combined sales dropped by 15%, from USD 5,288 bn (2021) to 4,513 bn (2022).
MSD held two SPCs in Switzerland, i.e.
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- C01412357/01 for the fixed-dose combination of sitagliptin and metformin (granted 31 December 2009, lapsed 7 April 2023); and
- C01412357/02 for sitagliptin as such (granted 23 November 2021 as a paediatric extension, lapsed on 4 January 2023).
Both SPCs were based on EP 1 412 357 B1 (lapsed 5 July 2022; see EPO Register and Swissreg).
Helvepharm, Sandoz and Mepha chose to enter the market with the fixed dose combination only in April 2023, while Spirig (member of the Stada group of companies) apparently took that step already in January 2023 when C01412357/01 was still in place ; see Compendium.
Here’s what happened:
When Spirig had obtained the Swiss market approval for the fixed-dose combination, MSD requested them to confirm that they will respect the two SPCs. Spirig confirmed that it would respect the one for sitagliptin as such, but refused to confirm the same for the SPC on the fixed-dose combination, because the latter was invalid, in their view.
On that basis, MSD sought preliminary injunctive relief on 23 December 2022. The President acting as single judge dismissed MSD’s request for an ex parte PI with order of 3 January 2022 (unpublished). Essentially, it had been held that mere refusal to confirm that one respects an SPC does not mean that infringing acts are imminent:
This could have been it. But it wasn’t. Shortly thereafter, on 12 January 2023 when the inter partes PI proceedings were still ongoing, MSD informed the FPC and provided evidence that Spirig meanwhile had entered the market — and again requested an ex parte PI. This time, indeed, the President issued an ex parte PI on 16 January 2023, yet without reasons. On Spirig’s request, reasons for the ex parte PI were subsequently provided. Spirig did not dispute but rather even confirmed with their request for a reasoned decision that they had taken up commercialization of the fixed-dose combination:
Apparently, Spirig took from certain subsidiary considerations in the President’s (unpublished) order of 3 January 2023 that MSD’s right to an ex parte PI would be forfeited. But it wasn’t: New facts (infringing acts) gave rise to a new assessment by the President.
Turning now to the alleged invalidity of the fixed-dose SPC, the judgment holds that the (meanwhile overcome) ‘infringement test’ still applies to C01412357/01, in view of a Swiss Supreme Court decision of 2018; see this Blog here. What is more, the fixed-dose SPC was the first one to be granted in Switzerland. Accordingly, the President held that the Swiss fixed-dose SPC was prima facie valid.
The situation is different in some other countries, e.g. in Germany where the Federal Patent Court had revoked the fixed-dose SPC because it lacked a further ‘inventive advance’; see 3 Ni 2/20. Note, however, that the fixed-dose SPC was the second one to be granted in Germany. MSD’s appeal is currently pending at the German Supreme Court, with case no. X ZR 64/21.
My reading between the lines is that the Swiss Federal Patent Court does have a different understanding of the ECJ rulings on combination SPCs than the German Federal Patent Court. The FPC explicitly disagrees with Spirig’s pleadings to this effect:
But, hey, the ECJ rulings on SPCs are somewhat cryptic indeed, aren’t they? Accordingly, it comes as no surprise that the Markkinaoikeus of Finland in corresponding proceedings between MSD and Teva asked the ECJ for a preliminary ruling (case no. C-119/22); see the questions here. Maybe, we will soon get some clarification about ‘core inventive advance’, ‘central inventive step’ and/or ‘subject matter of the invention’ from the ECJ (hopefully, it’ll not be a ruling that raises more questions than it answers).
The ex parte PI that had been issued by the President was confirmed by a panel of three judges after Spirig has been heard, with judgment of 27 March 2023.
What is interesting on the precedural side is that MSD was not set a time limit for initiating main proceedings. The SPC lapsed earlier than the 30 days time limit, which is why the excercise was meaningless:
The judgment has not been appealed / is final.
✍ MW
BIBLIOGRAPHY
Case No. S2022_010 | ‘Sitagliptin Metformin’
👉 Order of 16 January 2023
👉 Judgment of 27 March 2023
Merck Sharp & Dohme LLC
./.
Spirig Healthcare AG
Single Judge (Order of 16 January 2023):
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- Dr. Mark SCHWEIZER
Panel of Judges (Judgment of 27 March 2023):
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- Dr. Mark SCHWEIZER
- Dr. Tobias BREMI
- Prof. Dr. Daniel KRAUS
Judge-rapporteur:
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- Dr. Tobias BREMI
Court Clerk:
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- Dr. Lukas ABEGG
Representative(s) of Plaintiff:
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- Dr. Thierry CALAME (Lenz & Staehelin)
- Dr. Barbara ABEGG (Lenz & Staehelin)
- Dr. Siegfried GRIMM (Blum), assisting in patent matters
Representative(s) of Defendant:
Decision of 27 March 2022 in case of Merck Sharp & Dohme v. Spirig HealthCare re supplementary protection certificate for combination of sitagliptin and metformin (Janumet®): SPC presumably valid, Spirig provisionally enjoined, https://t.co/aVwb2wqHvU pic.twitter.com/YoXGjqvJVw
— Swiss Patent Court (@PatentCourt) April 11, 2023
JUDGMENT
EX PARTE PI
BASIC PATENT
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