--- title: "Power Search: Event Filter" description: Learn how to use event filters in Power Search to find companies based on specific events within a selected time period. --- [Skip to content](https://help.northdata.com/en/center/event-filter#main-content) - [English](https://help.northdata.com/en/center/event-filter) - [Deutsch](https://help.northdata.com/de/center/ereignisfilter) - [Français](https://help.northdata.com/fr/center/recherche-avancée-filtre-dévénements) English Show submenu for translations [![northdata-logo.png\]](https://help.northdata.com/hs-fs/hubfs/northdata-logo.png?width=250&height=86&name=northdata-logo.png)](https://www.northdata.com/) Open main navigation Close main navigation - - [English](https://help.northdata.com/en/center/event-filter) - [Deutsch](https://help.northdata.com/de/center/ereignisfilter) - [Français](https://help.northdata.com/fr/center/recherche-avancée-filtre-dévénements) English Show submenu for translations - [Back to the main page](https://www.northdata.com/) [Back to the main page](https://www.northdata.com/) Hello! How can we help? - There are no suggestions because the search field is empty. 1. [North Data Help Center](https://help.northdata.com/en/center?hsLang=en) 2. [Searching](https://help.northdata.com/en/center/searching?hsLang=en) 3. [Power Search](https://help.northdata.com/en/center/searching?hsLang=en#power-search) # Power Search: Event Filter ## How to use event filters to specifically search for companies where a specific event took place within a defined period. The event filter is an essential component of the [Power Search](https://help.northdata.com/en/center/power-search-overview?hsLang=en). Example events include: *New registration, insolvency, liquidation, management changes, name changes, capital, address, legal form, statutory, registration of a trademark, registration of a patent*, and others.  To add an event filter, click on the button "**+ Event Filter**" and select the event type from the drop down menu. You can also enter a *"**S****tart date**"  *and/or *"**End Date.**"* At least one of the fields must be filled.  If the *"**Start date**"*  is left blank, then the search will retrieve all information available until the end date: e.g., **Start date** = "  " and **End date** = 2020-01-01, then the search will retrieve all the information available until 2020. If the "**End date**" is left blank, then the search will retrieve all information available until now. At least one of the boxes must contain an entry. e.g., **Start date** = 2018-01-01 and **End date** = "  ", then the search will retrieve all the information available from 2018 onwards. Multiple event filters can be used at the same time, but only one event type at a time. For example, one filter for insolvencies and one for management change. In this [video](https://help.northdata.com/hubfs/Premium%20Services%20Videos/North%20Data%20Power%20Search_ENG.mp4?hsLang=en), we focus on the Power Search and how you can use the available filters to find those companies which match your criteria. - [My Account](https://help.northdata.com/en/center/my-account?hsLang=en#main-content) - [Account & Access](https://help.northdata.com/en/center/my-account?hsLang=en#account-access) - [Subscription & Cancellation](https://help.northdata.com/en/center/my-account?hsLang=en#subscription-cancellation) - [Contact & Support](https://help.northdata.com/en/center/my-account?hsLang=en#contact-support) - [Premium Services](https://help.northdata.com/en/center/premium-services?hsLang=en#main-content) - [General Information](https://help.northdata.com/en/center/premium-services?hsLang=en#general-information) - [Dossier](https://help.northdata.com/en/center/premium-services?hsLang=en#dossier) - [Network diagram](https://help.northdata.com/en/center/premium-services?hsLang=en#network-diagram) - 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