Pillar guide
INPI Guichet Unique electronic signature: full guide 2026
Everything about the electronic signature on the INPI Guichet Unique: required level, providers, alternatives, troubleshooting.
Tutorial
How to sign an INPI document: step-by-step
Step-by-step guide to signing an INPI formality on the Guichet Unique in 5 minutes without getting stuck.
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Comparison
INPI electronic signature: pricing 2026
Real prices from French providers: €29 unitary vs €800/year subscriptions. The trap of yearly plans.
Comparison
Universign vs Yousign vs DocuSign vs AR24: INPI comparison
Independent comparison of the 5 major qualified signature providers for INPI in 2026.
FC
Pain point
FranceConnect+ doesn't work on INPI
Blank page, orange banner, infinite loop: all classic FranceConnect+ failures and how to unblock.
Understanding eIDAS
Advanced vs Qualified eIDAS signature: which one for INPI?
Detailed technical and legal differences between the 3 eIDAS levels.
Understanding eIDAS
EU Trust List: choosing a qualified provider
How to verify a provider is officially recognised, and why it matters for INPI acceptance.
Understanding eIDAS
eIDAS Regulation 910/2014: what you need to know
Foundations of European law on qualified signature, and consequences for your INPI formalities.
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Pain point
INPI summary rejected: 7 reasons and how to unblock
Diagnose the cause and fix in 5 minutes. The 7 most common rejection reasons.
Pain point
Advanced signature rejected by INPI: why
Why the "advanced" level isn't enough and how to switch to qualified quickly.
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Alternative
Alternative to FranceConnect+ for INPI
All legally equivalent alternatives that work in 2026.
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Alternative
Sign on INPI without FranceConnect
Complete method to validate a Guichet Unique formality without FranceConnect+.
Comparison
Free INPI electronic signature: what works
99% of free solutions are rejected by INPI. The only one that works, and its limits.
Pain point
Blank page on INPI: troubleshooting guide 2026
Blockers, VPN, cache: complete troubleshooting + qualified alternative.
Pain point
La Poste Digital Identity rejected: alternatives
IDN refused, post office appointment impossible, delays too long? Working alternatives.
Tutorial
Amend SAS articles on Guichet Unique: tutorial
Step by step: director change, registered office, share capital. All required documents.
Tutorial
How to download the INPI summary step by step
Where to find the PDF, in what format, and how to verify it before signing.
Tutorial
File annual accounts on INPI: complete guide
Legal deadlines, mandatory documents, qualified signature, confidentiality declaration.
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Alternative ·
Alternative à FranceConnect+ pour signer sur l'INPI
All legally equivalent alternatives to FranceConnect+ that work in 2026.
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Alternative ·
Signer sur l'INPI sans FranceConnect
Complete method to validate a Guichet Unique formality without depending on FranceConnect+.
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Pain point ·
Synthèse INPI refusée : 7 raisons et comment débloquer
Diagnose the cause and fix in 5 minutes. The 7 most common rejection reasons.
Pain point ·
Signature avancée INPI refusée : pourquoi
Why the "advanced" level is not enough and how to switch to qualified quickly.
Pain point ·
Page blanche sur l'INPI : guide de dépannage 2026
The INPI portal shows a blank page after authentication? Blockers, VPN, cache: full troubleshooting.
Pain point ·
Identité numérique La Poste rejetée
IDN request refused, post office appointment impossible, delays too long? The alternatives that work.
Understanding eIDAS ·
Signature avancée vs qualifiée eIDAS
Detailed technical and legal differences between the 3 eIDAS levels.
Understanding eIDAS ·
EU Trust List : choisir un prestataire qualifié
How to verify a provider is officially recognised, and why it matters for INPI acceptance.
Understanding eIDAS ·
Règlement eIDAS 910/2014 : ce qu'il faut savoir
Foundations of the European regulation underlying qualified signature, and consequences for your INPI formalities.
Comparison ·
Signature électronique gratuite INPI : ce qui marche
99% of free solutions are rejected by the INPI. The only one that works, and its limits.