DJ
Duffy, James Edwin Marsh
Netherlands
Duffy, James Edwin Marsh is a patent firm in Netherlands, Rated for european patent work on the cumulative record, one of 485 firms filing in Netherlands, strongest in Engineering, Organic and Chemistry, acting for DSM IP Assets B.V. and DSM Fine Chemicals Austria Nfg GmbH & Co KG.
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Selected from 485 firms filing in Netherlands
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IPRATE.EURated
PATENTS · 2026
Confidence
Moderate Confidence. The published tier reflects the selected country, vertical, track, and time window.
Vertical
Track
Window
Performance
Patents · European · Cumulative (20y)Rating
Moderate Confidence
Archetype
Diversified Portfolio
Distinct Clients
2
Success Rate
38.9%
Volume45
Success49
Speed46
Durability52
RenewalsN/A
Domestic51
Practice profile
Top classes
Engineering(14%) · IPC F41H5/04Organic(5%) · IPC C07D201/16Chemistry(4%) · IPC C01B21/14
Top clients
- DSM IP Assets B.V.
- DSM Fine Chemicals Austria Nfg GmbH & Co KG