Methods to connect free-standing soft neural probes to active electronic devices with high channel count interface

Methods of fabricating soft probes, such as soft neural probes are provided. The fabrication methods entail fabrication of soft probes, such as free-standing soft neural probes, on a fabrication substrate and methods of releasing the fabricated neural probes from the substrate without damage. The methods may involve deposition of alternating layers of insulating flexible polymer, such as an elastomer, and conductive or semiconductive material.

The abstract as published by the patent office, from EP4673050A1. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B2562/125, A61B5/293, A61B5/6868, A61N1/0529, A61N1/0534). The claims define what a patent protects, and they are not read here.

Interface and electrodes

Everything downstream works with what the contacts pick up. Their number, size and distance from the neurons set the ceiling on the signal. The problem behind it: more contacts, closer to neurons, that still record after years in tissue that reacts to them.

Why the layer matters to the field, not a judgement of this filing. A patent family shows that protection was sought. It does not show that the technology was built, is used in a product, or works in people. The whole stack

One invention, published 3 times in 3 offices. Each publication opens in Espacenet.

• International (PCT)a route to several countries, not a countryWO2024182406A16 Sep 2024
• ChinaCN120712055A26 Sep 2025
• European Patent Officea route to several countries, not a countryEP4673050A17 Jan 2026

1. 27 Feb 2023First filingEarliest priority, at United States. The family is counted in this year.
2. 27 Feb 2024ApplicationsFiled at International (PCT), China, European Patent Office.
3. 6 Sep 2024First publicationWO2024182406A1, International (PCT).

Dates as the offices published them. Office records are in the offices' own words and are a selection: refusals, lapses and withdrawals, and records that name an owner. Each concerns one member of the family, not the family as a whole, and another member in the same office may stand. Whether a patent is in force today is not assessed.

Organisation

Axoft · 3 families identified

• Bibliographic data, family members and office records: European Patent Office, Open Patent Services (the DOCDB and INPADOC databases), read 11 Oct 2026.
• The record itself, with its claims and description: EP4673050A1 in Espacenet
• Counted as a BCI patent family: classified A61B5/293 (invasive electrodes for brain recording); filed by AXOFT, INC., an organisation already in the graph; describes neural hardware or methods without naming the field. How families are found and judged