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F. Hoffmann-La Roche AG - Plunger and Method of Manufacturing a Plunger

Favicon for changeflow.com ChangeBridge: EPO Bulletin - Medical Devices (A61M)
Published March 25th, 2026
Detected April 1st, 2026
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Summary

The European Patent Office published Patent EP3820551A1 granting F. Hoffmann-La Roche AG rights to a plunger device and its method of manufacture. The patent covers IPC classification A61M 5/315 and is valid in all designated Contracting States. No regulatory compliance actions or deadlines are associated with this patent grant.

What changed

EPO granted Patent EP3820551A1 to F. Hoffmann-La Roche AG for an invention titled 'Plunger and Method of Manufacturing a Plunger.' The patent covers technology classified under A61M 5/315 and designates all member states including AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, and TR.

Patent grants do not create compliance obligations for third parties. Organizations in the medical device sector should be aware of this intellectual property when developing similar plunger technologies to avoid potential infringement issues. No action is required unless the organization operates in the pharmaceutical injection device space and may be developing competing products.

Source document (simplified)

← EPO Patent Bulletin

PLUNGER AND METHOD OF MANUFACTURING A PLUNGER

Publication EP3820551A1 Kind: A1 Mar 25, 2026

Applicants

F. Hoffmann-La Roche AG

Inventors

GAILLOT, Maxime, DWYER, Alan, LAUNOIS, Pascal, MCDONNELL, Julian, CONNAUGHTON, Eoin, TEUCHER, Mark, Digby, RIDLEY, Jonathan, Paul

IPC Classifications

A61M 5/315 20060101AFI20200117BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

View original document →

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
EPO
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP3820551A1

Who this affects

Applies to
Medical device makers Manufacturers
Industry sector
3345 Medical Device Manufacturing 3254 Pharmaceutical Manufacturing
Activity scope
Medical Device Patents Pharmaceutical Packaging Technology
Geographic scope
European Union EU

Taxonomy

Primary area
Medical Devices
Operational domain
Legal, Intellectual Property
Topics
Intellectual Property Healthcare

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