GATT Technologies and the EIC Accelerator: A Surgical Patch for J&J

29 September 2026847 words5 min

Surgeons need to stop bleeding and seal tissue quickly during operations on organs such as the liver. GATT Technologies, a Dutch company, developed GATT-Patch, a sealing patch that the EIC award described as "one patch stops all" surgical bleeding and organ leakage. In October 2021 the EIC selected its project to scale up production of the patch.

No GATT-OPSA grant project appears in the EU's CORDIS database. In a November 2023 release, Johnson & Johnson said: "In May 2022, Ethicon acquired GATT Technologies B.V., a Netherlands-based company". By 1 January 2023 GATT Technologies B.V. was listed as a subsidiary of Johnson & Johnson in the US group's annual report, and its website now redirects to Johnson & Johnson MedTech. The price has not been published.

3Completed GATT-Patch trials on ClinicalTrials.gov
132Patients in the trial against TachoSil
0EIC grant projects on CORDIS
J&JOwner since May 2022

Company file

Legal entity
GATT Technologies B.V., Netherlands
Product
GATT-Patch surgical sealing patch
Trials
NCT04819945, NCT05385952, NCT05900037, all completed
Owner
Johnson & Johnson (Ethicon), since May 2022
Website
Redirects to J&J MedTech
EIC award
GATT-OPSA, blended finance; no project on CORDIS

Where GATT Technologies Stands Today

GATT Technologies B.V. appears in Johnson & Johnson's list of subsidiaries as of 1 January 2023 and in every annual report since, most recently the 2026 filing. The company's domain, gatt-tech.com, forwards to a J&J MedTech page. The patch itself is now sold by Ethicon as ETHIZIA: J&J announced its CE mark in November 2023, with an EMEA launch expected in the first quarter of 2024, and said that in 80% of clinical trial patients it "stopped bleeding in 30 seconds, an average of six times faster than the leading Fibrin Sealant Patch". Neither J&J's filings nor the sources we could access give the price or timing of the deal.

The EU record

What the public record holds on the EIC award

EIC grant projects with GATT as coordinator on CORDIS, and years in which J&J lists GATT Technologies B.V. as a subsidiary in its annual reports (2023 to 2026).

CORDIS Horizon Europe open data; Johnson & Johnson Form 10-K exhibits.

The Product: A Patch Against Bleeding

GATT-Patch is applied to bleeding or leaking tissue during surgery. On ClinicalTrials.gov, GATT sponsored three completed trials: a 56-patient study in open liver surgery from April 2021, a 132-patient comparison with the sealant TachoSil in liver surgery from August 2022, and a 53-patient comparison with Surgicel in minimally invasive liver and gallbladder surgery from October 2023, both after it had joined J&J.

The evidence

GATT-Patch trials on ClinicalTrials.gov

Enrolment in the three completed trials sponsored by GATT Technologies.

ClinicalTrials.gov NCT04819945, NCT05385952, NCT05900037.

"Upscaling GATT-Patch production: One-Patch-Stops-All (OPSA) surgical bleeding and organ leakages."

GATT-OPSA award description, EIC

What the EIC Project Promised, and What the Record Shows

The award was for scaling up production of GATT-Patch, as blended finance. We searched the CORDIS Horizon Europe data and found no project with GATT Technologies as coordinator. GATT became part of Johnson & Johnson in May 2022, seven months after the selection; whether a grant agreement was ever signed is not public.

  1. A signed EIC projectNot shownNot on CORDIS.
  2. Clinical evidenceDeliveredThree completed trials.
  3. Scaled productionUnknownNow inside J&J.
  4. A strategic ownerDeliveredJohnson & Johnson.

What Has Happened Since the Award

The record

From EIC award to Johnson & Johnson subsidiary

GATT Technologies was selected by the EIC in late 2021 and appears among Johnson & Johnson's subsidiaries by January 2023; no EIC grant project is on CORDIS.

  1. Apr 2021First liver studyGATT-Patch in open liver surgery, 56 patients
  2. Oct 2021EIC Accelerator cut-offGATT-OPSA: upscaling production of GATT-Patch
  3. May 2022Bought by EthiconJohnson & Johnson's surgical unit acquires GATTJ&J
  4. Aug 2022Comparative trialGATT-Patch versus TachoSil in liver surgery, 132 patients
  5. Oct 2023Minimally invasive trialGATT-Patch versus Surgicel, 53 patients
  6. Nov 2023CE mark as ETHIZIAEthicon announces the patch; EMEA launch planned Q1 2024
  7. 2026Websitegatt-tech.com redirects to J&J MedTech

ClinicalTrials.gov and Johnson & Johnson SEC filings.

The Money

We found no EIC Fund investment, no disclosed acquisition price and no record of EIC grant payments. GATT's earlier investors and funding were not accessible for this article.

What cannot be checked

What J&J paid for GATT, whether any EIC money was paid, and ETHIZIA's sales are not public in the sources we used.

Why Europe Should Care

An EIC selection is meant to help a European start-up scale. Here the start-up was bought by a US healthcare group, on terms that have not been published. For the EU, the award leaves no public trace, and the product's European future is in J&J's hands.

What the project promised

Scaled-up production of a patch that stops surgical bleeding and organ leaks.

What the record shows

Three completed trials and an acquisition by Johnson & Johnson; no EIC project on record.

The Verdict

Selected, then sold

Johnson & Johnson bought GATT Technologies within about a year of the EIC selection, and its reasons are not public. But the EIC award itself has no public record, and nothing shows whether EU money played any part.

GATT Technologies and Johnson & Johnson have not been asked for comment for this article. It is based entirely on SEC filings, EU data and the trial registry, linked throughout.

Industry

HealthMedical devices

Focus
  • Surgical devices
Technologies
  • Biomaterials
Keywords
  • Haemostatic patches
  • Surgical bleeding
  • Liver surgery
  • Organ leakage