EN:Data Content: Difference between revisions
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*'''DOCDB''' – bibliographic data and texts for more than 100 offices | *'''DOCDB''' – bibliographic data and texts for more than 100 offices | ||
*'''INPADOC''' – Legal status data and patent family information | *'''INPADOC''' – [[EN:Legal_Status_Data|Legal status data]] and patent family information | ||
*'''OPS''' und '''DepatisNet-Interface''' – Original documents (PDF and figures) | *'''OPS''' und '''DepatisNet-Interface''' – Original documents (PDF and figures) | ||
* Full | *'''Public patent offices''' - Special patent information from specific patent offices such as Fterms, PTA, PTE, etc. | ||
*'''Third-Party Providers''' - Full text and bibliographic data are completed by third-party providers | |||
<br /> | |||
Data content European Patent Office:<br /> | Data content European Patent Office:<br /> | ||
https://www.epo.org/en/searching-for-patents/data/coverage/weekly<br /> | |||
These websites are regularly updated by the European Patent Office.<br /> | These websites are regularly updated by the European Patent Office.<br /> | ||
=== Full text extension === | === Full text extension === | ||
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|- | |- | ||
! CC !! country !! original language(s) !!colspan="2"| default database - original language(s) !!colspan="3"| extension - original language(s) !!colspan="3"| extension - english machine translations | ! CC !! country !! original language(s) !!colspan="2"| default database - original language(s) !!colspan="3"| extension - original language(s) !!colspan="3"| extension - english machine translations | ||
|- | |- | ||
| AR | | AR | ||
| Line 56: | Line 49: | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1966 - now | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 70: | Line 63: | ||
| BG | | BG | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1994 - now | ||
|colspan="3"| | |colspan="3"| 1994 - now | ||
|- | |- | ||
| BR | | BR | ||
| Line 79: | Line 72: | ||
|colspan="3"| 1982 - now | |colspan="3"| 1982 - now | ||
|colspan="3"| 1982 - now | |colspan="3"| 1982 - now | ||
|- | |- | ||
| CA | | CA | ||
| Canada | | Canada | ||
| EN FR | | EN FR | ||
|colspan=" | |colspan="2"| | ||
|colspan="3"| 1920 - now | |||
|colspan=" | |colspan="3"| 1920 - now | ||
| 1920 | |||
|colspan="3"| | |||
|- | |- | ||
| CH | | CH | ||
| Line 110: | Line 93: | ||
|colspan="3"| 1985 - now | |colspan="3"| 1985 - now | ||
|colspan="3"| 1985 - now | |colspan="3"| 1985 - now | ||
|- | |- | ||
| CR | | CR | ||
| Line 122: | Line 98: | ||
| ES | | ES | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|- | |- | ||
| CS | | CS | ||
| Line 129: | Line 105: | ||
| CS SK | | CS SK | ||
|colspan="2"| | |colspan="2"| | ||
|colspan=" | |colspan="3"| in progress | ||
|colspan="3"| | |||
|colspan=" | |||
|- | |- | ||
| CU | | CU | ||
| Line 138: | Line 112: | ||
| ES | | ES | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2009 - 2012 | ||
|colspan="3"| | |colspan="3"| 2009 - 2012 | ||
|- | |||
| CY | |||
| Cyprus | |||
| EN | |||
|colspan="2"| | |||
|colspan="3"| 1983 - 1998 | |||
|colspan="3"| | |||
|- | |- | ||
| CZ | | CZ | ||
| Line 152: | Line 133: | ||
| DE | | DE | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| 1956 - | |colspan="3"| 1956 - 2003 | ||
|colspan="3"| 1956 - | |colspan="3"| 1956 - 2003 | ||
|- | |- | ||
| DE | | DE | ||
| Line 168: | Line 149: | ||
|colspan="3"| 1895 - now | |colspan="3"| 1895 - now | ||
|colspan="3"| 1895 - now | |colspan="3"| 1895 - now | ||
|- | |||
| DZ | |||
| Algeria | |||
| FR | |||
|colspan="2"| | |||
|colspan="3"| 2001 - 2005 | |||
|colspan="3"| 2001 - 2005 | |||
|- | |- | ||
| EA | | EA | ||
| Line 173: | Line 161: | ||
| RU | | RU | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2000 - 2022 | ||
|colspan="3"| | |colspan="3"| 2000 - 2022 | ||
|- | |- | ||
| EE | | EE | ||
| Line 180: | Line 168: | ||
| ET | | ET | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1995 - now | ||
|colspan="3"| | |colspan="3"| 1995 - now | ||
|- | |- | ||
| EP | | EP | ||
| Line 193: | Line 181: | ||
| Spain | | Spain | ||
| ES | | ES | ||
|colspan="2"| | |colspan="2"| 1941 - now | ||
|colspan="3"| | |colspan="3"| 1941 - now | ||
|colspan="3"| | |colspan="3"| 1941 - now | ||
|- | |- | ||
| FI | | FI | ||
| Line 201: | Line 189: | ||
| EN FI SV | | EN FI SV | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1881 - now | ||
|colspan="3"| | |colspan="3"| 1881 - now | ||
|- | |- | ||
| FR | | FR | ||
| France | | France | ||
| FR | | FR | ||
|colspan="2"| | |colspan="2"| 1902 - now | ||
|colspan="3"| 1902 - now | |colspan="3"| 1902 - now | ||
|colspan="3"| 1902 - now | |colspan="3"| 1902 - now | ||
| Line 236: | Line 224: | ||
| EL | | EL | ||
|colspan="2"| | |colspan="2"| | ||
|colspan=" | |colspan="3"| 2000 - now | ||
|colspan="3"| 2000 - now | |||
|colspan=" | |||
|- | |- | ||
| HK | | HK | ||
| Line 247: | Line 231: | ||
| EN ZH | | EN ZH | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| in progress | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| HR | | HR | ||
| Line 261: | Line 245: | ||
| EN DE FR HU | | EN DE FR HU | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|- | |||
| ID | |||
| Indonesia | |||
| EN | |||
|colspan="2"| | |||
|colspan="3"| in progress | |||
|colspan="3"| | |||
|- | |- | ||
| IE | | IE | ||
| Ireland | | Ireland | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| 1991 - now | ||
|colspan="3"| | |colspan="3"| 1991 - now | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 282: | Line 273: | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1912 - now | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 289: | Line 280: | ||
| EN NO IS | | EN NO IS | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1964 - now | ||
|colspan="3"| | |colspan="3"| 1964 - now | ||
|- | |- | ||
| IT | | IT | ||
| Line 296: | Line 287: | ||
| IT | | IT | ||
|colspan="2"| | |colspan="2"| | ||
|colspan=" | |colspan="3"| 1979 - jetzt | ||
|colspan="3"| 1979 - jetzt | |||
|colspan=" | |||
|- | |- | ||
| JP | | JP | ||
| Line 305: | Line 294: | ||
| JA | | JA | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1983 - now | ||
|colspan="3"| | |colspan="3"| 1983 - now | ||
|- | |- | ||
| KR | | KR | ||
| Line 319: | Line 308: | ||
| LT | | LT | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2014 - now | ||
|colspan="3"| | |colspan="3"| 2014 - now | ||
|- | |- | ||
| LU | | LU | ||
| Luxembourg | | Luxembourg | ||
| EN DE FR | | EN DE FR | ||
|colspan="2"| | |colspan="2"| 1945 - now | ||
|colspan="3"| | |colspan="3"| 1945 - now | ||
|colspan="3"| | |colspan="3"| 1945 - now | ||
|- | |- | ||
| LV | | LV | ||
| Line 333: | Line 322: | ||
| LV | | LV | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2019 - 2020 | ||
|colspan="3"| | |colspan="3"| 2019 - 2020 | ||
|- | |- | ||
| MA | | MA | ||
| Line 340: | Line 329: | ||
| FR AR | | FR AR | ||
|colspan="2"| | |colspan="2"| | ||
|colspan=" | |colspan="3"| 2005 - jetzt | ||
|colspan="3"| 2005 - jetzt | |||
|colspan=" | |||
|- | |- | ||
| MC | | MC | ||
| Monaco | | Monaco | ||
| FR | | FR | ||
|colspan="2"| 1961 - | |colspan="2"| 1961 - 2012 | ||
|colspan="3"| | |colspan="3"| | ||
|colspan="3"| 1961 - | |colspan="3"| 1961 - 2012 | ||
|- | |- | ||
| MD | | MD | ||
| Line 356: | Line 343: | ||
| RO | | RO | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1998 - now | ||
|colspan="3"| | |colspan="3"| 1998 - now | ||
|- | |- | ||
| MX | | MX | ||
| Line 363: | Line 350: | ||
| ES | | ES | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1982 | 1997-1998 | 2002 - now | ||
|colspan="3"| | |colspan="3"| 1982 | 1997-1998 | 2002 - now | ||
|- | |- | ||
| MY | | MY | ||
| Line 370: | Line 357: | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| 2005 - | |colspan="3"| 2005 - 2010 | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 391: | Line 378: | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1984 - now | ||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 398: | Line 385: | ||
| EN FR | | EN FR | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1966 - 2007 | ||
|colspan="3"| | |colspan="3"| 1966 - 2007 | ||
|- | |- | ||
| PL | | PL | ||
| Poland | | Poland | ||
| PL | | PL | ||
|colspan="2"| 2006 - now | |colspan="2"| 1973 - 1975 | 2006 - now | ||
|colspan="3"| 1973 - now | |colspan="3"| 1973 - 1975 | 2006 - now | ||
|colspan="3"| 1973 - now | |colspan="3"| 1973 - 1975 | 2006 - now | ||
|- | |- | ||
| PT | | PT | ||
| Line 420: | Line 399: | ||
| PT | | PT | ||
|colspan="2"| 2007 - now | |colspan="2"| 2007 - now | ||
|colspan=" | |colspan="3"| 2011 - now | ||
|colspan="3"| 2011 - now | |||
|colspan=" | |||
|- | |- | ||
| RO | | RO | ||
| Line 429: | Line 406: | ||
| RO | | RO | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1996 - now | ||
|colspan="3"| | |colspan="3"| 1996 - now | ||
|- | |- | ||
| RS | | RS | ||
| Line 436: | Line 413: | ||
| EN SR | | EN SR | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| 2006 - | |colspan="3"| 2006 - 2018 | ||
|colspan="3"| 2006 - | |colspan="3"| 2006 - 2018 | ||
|- | |- | ||
| RU | | RU | ||
| Line 450: | Line 427: | ||
| EN SV | | EN SV | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1886 - now | ||
|colspan="3"| | |colspan="3"| 1886 - now | ||
|- | |- | ||
| SG | | SG | ||
| Line 457: | Line 434: | ||
| EN | | EN | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2012 - 2013 | ||
|colspan="3"| | |||
|- | |||
| SI | |||
| Slovenia | |||
| SL | |||
|colspan="2"| | |||
|colspan="3"| 2014 - now | |||
|colspan="3"| | |colspan="3"| | ||
|- | |- | ||
| Line 464: | Line 448: | ||
| SK | | SK | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2013 - now | ||
|colspan="3"| | |colspan="3"| 2013 - now | ||
|- | |- | ||
| SU | | SU | ||
| Line 473: | Line 457: | ||
|colspan="3"| 1924 - 2021 | |colspan="3"| 1924 - 2021 | ||
|colspan="3"| 1924 - 2021 | |colspan="3"| 1924 - 2021 | ||
|- | |||
| TH | |||
| Thailand | |||
| EN | |||
|colspan="2"| | |||
|colspan="3"| in progress | |||
|colspan="3"| | |||
|- | |- | ||
| TN | | TN | ||
| Line 478: | Line 469: | ||
| EN FR AR | | EN FR AR | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| 1990 - | |colspan="3"| 1990 - 2018 | ||
|colspan="3"| 1990 - | |colspan="3"| 1990 - 2018 | ||
|- | |- | ||
| TR | | TR | ||
| Line 485: | Line 476: | ||
| EN TR | | EN TR | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 1998 - 2022 | ||
|colspan="3"| | |colspan="3"| 1998 - 2022 | ||
|- | |- | ||
| TW | | TW | ||
| Line 499: | Line 490: | ||
| UA | | UA | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|colspan="3"| | |colspan="3"| 2000 - now | ||
|- | |- | ||
| US | | US | ||
| Line 513: | Line 504: | ||
| ES | | ES | ||
|colspan="2"| | |colspan="2"| | ||
|colspan="3"| | |colspan="3"| 2011 - 2023 | ||
|colspan="3"| | |colspan="3"| 2011 - 2023 | ||
|- | |- | ||
| WO | | WO | ||
| Line 522: | Line 513: | ||
|colspan="3"| | |colspan="3"| | ||
|colspan="3"| 1978 - now | |colspan="3"| 1978 - now | ||
|- | |||
| VN | |||
| Vietnam | |||
| EEN | |||
|colspan="2"| | |||
|colspan="3"| in progress | |||
|colspan="3"| | |||
|- | |||
| ZA | |||
| South Africa | |||
| EN | |||
|colspan="2"| | |||
|colspan="3"| in progress | |||
|colspan="3"| | |||
|- | |- | ||
|} | |} | ||
| Line 573: | Line 578: | ||
[[File:extFamExmple2.jpg|600px]] | [[File:extFamExmple2.jpg|600px]] | ||
[http://documents.epo.org/projects/babylon/eponet.nsf/0/C9387E5053AA707BC125816A00508E8D/$File/Patent_Families_at_the_EPO_en.pdf PDF with additional information regarding the patent family] | [http://documents.epo.org/projects/babylon/eponet.nsf/0/C9387E5053AA707BC125816A00508E8D/$File/Patent_Families_at_the_EPO_en.pdf PDF with additional information regarding the patent family] | ||
Latest revision as of 15:37, 20 February 2026
The IP7 patent database is one of the world’s largest patent databases.
Content
- DOCDB – bibliographic data and texts for more than 100 offices
- INPADOC – Legal status data and patent family information
- OPS und DepatisNet-Interface – Original documents (PDF and figures)
- Public patent offices - Special patent information from specific patent offices such as Fterms, PTA, PTE, etc.
- Third-Party Providers - Full text and bibliographic data are completed by third-party providers
Data content European Patent Office:
https://www.epo.org/en/searching-for-patents/data/coverage/weekly
These websites are regularly updated by the European Patent Office.
Full text extension
This additional data content can be optionally booked to your current service plan.
This extension enables the user to access additional original texts and machine translations in English.
It is possible to search these texts.
| CC | country | original language(s) | default database - original language(s) | extension - original language(s) | extension - english machine translations | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| AR | Argentine Republic | ES | 1974-1984 | 2000 -2009 | 2012 - now | 1974-1984 | 2000 -2009 | 2012 - now | ||
| AT | Austria | DE | 1899 - now | 1899 - now | ||||||
| AU | Australia | EN | 1966 - now | |||||||
| BE | Belgium | DE FR NL | 1926 - now | 1980 - now | ||||||
| BG | Bulgaria | BG | 1994 - now | 1994 - now | ||||||
| BR | Brazil | EN PT | 1982 - now | 1982 - now | ||||||
| CA | Canada | EN FR | 1920 - now | 1920 - now | ||||||
| CH | Switzerland | DE FR IT | 1888 - now | 1888 - now | ||||||
| CN | China | ZH | 1985 - now | 1985 - now | ||||||
| CR | Costa Rica | ES | 2000 - now | 2000 - now | ||||||
| CS | Czechoslovakia | CS SK | in progress | |||||||
| CU | Cuba | ES | 2009 - 2012 | 2009 - 2012 | ||||||
| CY | Cyprus | EN | 1983 - 1998 | |||||||
| CZ | Czech Republic | CS | 1993 - now | 1993 - now | ||||||
| DD | former East Germany - German Democratic Republic | DE | 1956 - 2003 | 1956 - 2003 | ||||||
| DE | Germany | DE | 1879 - now | 1879 - now | ||||||
| DK | Denmark | EN DA | 1895 - now | 1895 - now | ||||||
| DZ | Algeria | FR | 2001 - 2005 | 2001 - 2005 | ||||||
| EA | EAPO (Eurasian Patent Office) | RU | 2000 - 2022 | 2000 - 2022 | ||||||
| EE | Estonian | ET | 1995 - now | 1995 - now | ||||||
| EP | EPO (European Patent Office) | EN DE FR | 1978 - now | 1978 - now | ||||||
| ES | Spain | ES | 1941 - now | 1941 - now | 1941 - now | |||||
| FI | Finnland | EN FI SV | 1881 - now | 1881 - now | ||||||
| FR | France | FR | 1902 - now | 1902 - now | 1902 - now | |||||
| GB | United Kingdom | EN | 1893 - now | 1893 - now | ||||||
| GC | Patent office of the cooperation council for the arab states of the Gulf (GCC) | AR | 2002 - 2007 | 2002 - 2007 | ||||||
| GE | Georgia | KA | 2017 - now | 2017 - now | ||||||
| GR | Greece (Hellenic Republic) | EL | 2000 - now | 2000 - now | ||||||
| HK | Hong Kong | EN ZH | in progress | |||||||
| HR | Croatia | HR | 1994 - now | 1994 - now | ||||||
| HU | Hungary | EN DE FR HU | 2000 - now | 2000 - now | ||||||
| ID | Indonesia | EN | in progress | |||||||
| IE | Ireland | EN | 1991 - now | 1991 - now | ||||||
| IL | Israel | EN HE | 1970 - now | |||||||
| IN | India | EN | 1912 - now | |||||||
| IS | Iceland | EN NO IS | 1964 - now | 1964 - now | ||||||
| IT | Italy | IT | 1979 - jetzt | 1979 - jetzt | ||||||
| JP | Japan | JA | 1983 - now | 1983 - now | ||||||
| KR | Korea | KO | 1983 - now | 1983 - now | ||||||
| LT | Lithuania | LT | 2014 - now | 2014 - now | ||||||
| LU | Luxembourg | EN DE FR | 1945 - now | 1945 - now | 1945 - now | |||||
| LV | Latvia | LV | 2019 - 2020 | 2019 - 2020 | ||||||
| MA | Morocco | FR AR | 2005 - jetzt | 2005 - jetzt | ||||||
| MC | Monaco | FR | 1961 - 2012 | 1961 - 2012 | ||||||
| MD | The Republic of Moldova | RO | 1998 - now | 1998 - now | ||||||
| MX | Mexico | ES | 1982 | 1997-1998 | 2002 - now | 1982 | 1997-1998 | 2002 - now | ||||||
| MY | Malaysia | EN | 2005 - 2010 | |||||||
| NL | The Netherlands | EN NL | 1913 - now | 1913 - now | ||||||
| NO | Norway | EN NO | 1968 - now | 1968 - now | ||||||
| NZ | New Zealand | EN | 1984 - now | |||||||
| OA | African Intellectual Property Organization (OAPI) | EN FR | 1966 - 2007 | 1966 - 2007 | ||||||
| PL | Poland | PL | 1973 - 1975 | 2006 - now | 1973 - 1975 | 2006 - now | 1973 - 1975 | 2006 - now | |||||
| PT | Portugal | PT | 2007 - now | 2011 - now | 2011 - now | |||||
| RO | Romania | RO | 1996 - now | 1996 - now | ||||||
| RS | Serbia | EN SR | 2006 - 2018 | 2006 - 2018 | ||||||
| RU | Russia | RU | 1994 - 2022 | 1994 - 2022 | ||||||
| SE | Schweden | EN SV | 1886 - now | 1886 - now | ||||||
| SG | Singapore | EN | 2012 - 2013 | |||||||
| SI | Slovenia | SL | 2014 - now | |||||||
| SK | Slovakia | SK | 2013 - now | 2013 - now | ||||||
| SU | Soviet Union (USSR) | RU | 1924 - 2021 | 1924 - 2021 | ||||||
| TH | Thailand | EN | in progress | |||||||
| TN | Tunisia | EN FR AR | 1990 - 2018 | 1990 - 2018 | ||||||
| TR | Turkey | EN TR | 1998 - 2022 | 1998 - 2022 | ||||||
| TW | Taiwan | ZH | 1993 - now | 1993 - now | ||||||
| UA | Ukraine | UA | 2000 - now | 2000 - now | ||||||
| US | United States of America | EN | 1976 - now | 1836 - now | ||||||
| UY | Uruguay | ES | 2011 - 2023 | 2011 - 2023 | ||||||
| WO | WIPO | EN DE FR ES JA RU KO PT ZH AR | 1978 - now | 1978 - now | ||||||
| VN | Vietnam | EEN | in progress | |||||||
| ZA | South Africa | EN | in progress | |||||||
Update
Our data content is updated on a weekly basis.
We receive the data on a Thursday and the data is available in our database the following Monday.
Units/Grouping
- The document (D) is equivalent to a published text.
- The application (A) contains all documents of an application.
Example
A and B document: DE 10248531 A1 DE 10248531 B4 Constitutes one application: DE 10248531
In this case the document number does not necessarily have to be the same, e.g. US applications have a different number.
By using the application number, the documents of an application can be detected.
- The strict patent family (S) corresponds to DOCDB simple patent family.
Patent applications with the same technical content.
A simple patent family is a collection of patent documents that are considered to be covering one single invention.
Patent applications that are members of one simple patent family will have all priorities in common with all of the other members.
- The extended patent family (E) corresponds to INPADOC extended patent family.
Patent applications with similar technical content.
Patent applications that are members of an extended patent family will have at least one priority in common with at least one of the other members – either directly or indirectly.
Separating the extended patent families into strict patent families significantly simplifies patent work.
Once a document from a strict patent family was read, the strict patent family can be considered as read. This however, does not apply to the extended patent family.
Example

Extended patent family of: WO 2010036678 A1
Contains strict patent families with similar technical content:
- fluid turbine
- wind turbine