LF
Leyder, Francis
SpecialistPolymers · IPC C08SpecialistOrganic · IPC C07SpecialistProcesses · IPC B01Diegem, Belgium
Leyder, Francis is a patent firm in Diegem, Belgium, Top Rated for european patent work on the cumulative record, one of 277 firms filing in Belgium, strongest in Polymers, acting for Fina Technology, Inc., Total Petrochemicals Research Feluy and Total Research & Technology Feluy.
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Selected from 277 firms filing in Belgium
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IPRATE.EUTop Rated
PATENTS · 2026
Confidence
High Confidence. The published tier reflects the selected country, vertical, track, and time window.
Vertical
Track
Window
Performance
Patents · European · Cumulative (20y)Rating
High Confidence
Archetype
Full-Service Generalist
Distinct Clients
19
Success Rate
29.5%
Volume96
Success79
Speed60
Durability47
RenewalsN/A
Domestic44
Practice profile
Top classes
Polymers(6%) · IPC C08F10/00
Top clients
- Fina Technology, Inc.
- Total Petrochemicals Research Feluy
- Total Research & Technology Feluy
- Centre National de la Recherche Scientifique (C.N.R.S.)
- Futerro S.A.