Espacenet

Patent families, patent publication details and patent legal events

European Patent Office public patent search and family information.

Get patent family

Get patent family

Find a patent family, publication details, and reported legal events by patent number or invention title. Legal-event coverage varies by country; a grant alone does not establish that a patent is currently in force.

Your information

Patent

Publication number or invention title, for example US10000000B2 or Coherent LADAR using intra-pixel quadrature detection.

1 credit per completed run

The same inputs also work from your code or an AI assistant. See For developers.

Example results

Coherent LADAR using intra-pixel quadrature detection

Granted publications in 4 jurisdictions; applications without a recorded grant in 0; recorded lapses in 0. Current protection requires country-level confirmation.

Priority dateMar 10, 2015

Open patent family in Espacenet

Applicants

RAYTHEON CO [US]

Patent family

Latest legal events

Annual fee paid to national office [announced via postgrant information from national office to epo]Apr 20, 2026
France
Annual fee paid to national office [announced via postgrant information from national office to epo]Apr 13, 2026
Germany
Annual fee paid to national office [announced via postgrant information from national office to epo]Apr 9, 2026
United Kingdom
Lapsed in a contracting state [announced via postgrant information from national office to epo]Dec 12, 2025
Turkey
Maintenance fee paymentNov 19, 2025
United States
Lapsed in a contracting state [announced via postgrant information from national office to epo]Aug 18, 2025
Hungary
Receipt of annual feesAug 8, 2025
Japan
Lapsed in a contracting state [announced via postgrant information from national office to epo]Jul 25, 2025
CY
Receipt of annual feesJul 4, 2025
Japan
Receipt of annual feesDec 9, 2024
Japan
Lapsed in a contracting state [announced via postgrant information from national office to epo]Nov 29, 2024
BG
Lapsed in a contracting state [announced via postgrant information from national office to epo]Nov 14, 2024
BG
Receipt of annual feesAug 9, 2024
Japan
Maintenance fee paymentApr 18, 2024
United States
Lapsed in a contracting state [announced via postgrant information from national office to epo]Feb 29, 2024
Belgium
Lapsed in a contracting state [announced via postgrant information from national office to epo]Jan 31, 2024
Ireland
Lapsed in a contracting state [announced via postgrant information from national office to epo]Jan 31, 2024
Italy
Patent lapsedDec 20, 2023
Ireland
Receipt of annual feesNov 29, 2023
Japan
Lapsed in a contracting state [announced via postgrant information from national office to epo]Oct 31, 2023
Switzerland
Lapsed in a contracting state [announced via postgrant information from national office to epo]Oct 31, 2023
LI
Lapsed in a contracting state [announced via postgrant information from national office to epo]Oct 31, 2023
LU
Lapsed because of non-payment of the annual feeOct 19, 2023
Belgium
Lapsed in a contracting state [announced via postgrant information from national office to epo]Sep 29, 2023
MC
Patent ceasedSep 29, 2023
Switzerland
Lapsed in a contracting state [announced via postgrant information from national office to epo]Aug 31, 2023
SI
Receipt of annual feesJul 28, 2023
Japan
Opt-out of the competence of the unified patent court (upc) registeredJul 12, 2023
European Patent Office
No opposition filedJun 7, 2023
European Patent Office
No opposition filed within time limitMay 5, 2023
European Patent Office

About the Espacenet tool

Espacenet, also called EPO, uses a publication number or invention title to find a patent family and publication details.

Get patent family returns reported legal events; coverage varies by country, and a grant alone does not establish that a patent is in force.

Built from worldwide.espacenet.com. Last checked Sep 29, 2026.

Actions

Get patent family

1 credit

What you provide

Field	Type	Required	Description
Patent`patent`	Text	Required	Publication number or invention title, for example US10000000B2 or Coherent LADAR using intra-pixel quadrature detection.Example: Coherent LADAR using intra-pixel quadrature detection

What you get

Field	Type	Description
Title`title`	Text	Example: Coherent LADAR using intra-pixel quadrature detection
Family`family`	List
Kind`family[].kind`	Text	Example: Application
Country`family[].country`	Text	Example: European Patent Office
Legal Status`family[].legal_status`	Text	Example: Granted; current status not confirmed
Espacenet Link`family[].espacenet_link`	Text	Example: https://worldwide.espacenet.com/patent/search/family/055456961/publication/EP32…
Publication Date`family[].publication_date`	Text	Example: 2018-01-17
Publication Number`family[].publication_number`	Text	Example: EP3268771A1
Applicants`applicants`	List
Priority Date`priority_date`	Text	Example: 2015-03-10
Espacenet Link`espacenet_link`	Text	Example: https://worldwide.espacenet.com/patent/search/family/055456961/publication/US10…
Overall Status`overall_status`	Text	Example: Granted publications in 4 jurisdictions; applications without a recorded grant…
Latest Legal Events`latest_legal_events`	List
Date`latest_legal_events[].date`	Text	Example: 2026-04-20
Event`latest_legal_events[].event`	Text	Example: Annual fee paid to national office [announced via postgrant information from…
Country`latest_legal_events[].country`	Text	Example: France

Example result

For Patent: Coherent LADAR using intra-pixel quadrature detection

JSON

{
  "title": "Coherent LADAR using intra-pixel quadrature detection",
  "family": [
    {
      "kind": "application",
      "country": "European Patent Office",
      "legal_status": "Granted; current status not confirmed",
      "espacenet_link": "https://worldwide.espacenet.com/patent/search/family/055456961/publication/EP3268771A1",
      "publication_date": "2018-01-17",
      "publication_number": "EP3268771A1"
    },
    {
      "kind": "granted",
      "country": "European Patent Office",
      "legal_status": "Granted; current status not confirmed",
      "espacenet_link": "https://worldwide.espacenet.com/patent/search/family/055456961/publication/EP3268771B1",
      "publication_date": "2022-06-29",
      "publication_number": "EP3268771B1"
    }
  ],
  "applicants": [
    "RAYTHEON CO [US]"
  ],
  "priority_date": "2015-03-10",
  "espacenet_link": "https://worldwide.espacenet.com/patent/search/family/055456961/publication/US10000000B2",
  "overall_status": "Granted publications in 4 jurisdictions; applications without a recorded grant in 0; recorded lapses in 0. Current protection requires country-level confirmation.",
  "latest_legal_events": [
    {
      "date": "2026-04-20",
      "event": "Annual fee paid to national office [announced via postgrant information from national office to epo]",
      "country": "France"
    },
    {
      "date": "2026-04-13",
      "event": "Annual fee paid to national office [announced via postgrant information from national office to epo]",
      "country": "Germany"
    }
  ]
}

For developers

Call it from your code with one request. Change the values in input to run it on new data. To get an API key, open Developers at the bottom of Studio, turn on Developer mode and go to API keys.

cURL

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 180 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@espacenet",
  "visibility": "public",
  "operation": "get_patent_family",
  "version": 1,
  "input": {
    "patent": "Coherent LADAR using intra-pixel quadrature detection"
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

Find related publications for a patent.
Review applicants and priority dates across a patent family.
Check reported legal events by country.
Compare publication dates and numbers across family members.

Questions about Espacenet

Can I run it with my own inputs?

Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.

Can I call this Espacenet tool as an API?

Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.

How much does it cost?

Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.

Do I need a Espacenet account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from worldwide.espacenet.com when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.