Cookie Policy
Effective date: May 19, 2026
This Cookie Policy explains how Defo Labs LTD (trading as Patien), registered at 128 City Road, London, EC1V 2NX, United Kingdom, uses cookies and similar technologies when you visit usepatien.com or use our service.
What are cookies?
Cookies are small text files placed on your device when you visit a website. They allow the site to remember information about your visit, such as your login status or preferences.
Cookies we use
Strictly necessary cookies
These cookies are required for the service to function and cannot be disabled. They include:
- Session cookie — keeps you logged in during your session
- CSRF token — protects against cross-site request forgery attacks
- Preference cookie — stores your selected language and specialty
Analytics cookies
We use analytics tools to understand aggregate usage patterns — for example, which pages are most visited and how users navigate the site. This data is used solely to improve the product and is never used for advertising.
- _pat_v — distinguishes unique visits (anonymous, 30-day expiry)
- _pat_s — tracks session duration (session expiry)
- _clck, _clsk, CLID, ANONCHK, MR, MUID, SM — set by Microsoft Clarity for session recording and heatmaps; data is pseudonymous and used to improve UX. See Microsoft's Privacy Statement.
We do not use Google Analytics, Meta Pixel, or advertising trackers.
Functional cookies
- pat_theme — remembers light/dark mode preference
- pat_specialty — remembers your default specialty selection
What we do NOT use cookies for
- Advertising or retargeting
- Cross-site tracking
- Selling data to third parties
- Profiling individuals based on clinical activity
Managing cookies
You can control cookies through your browser settings. Note that disabling strictly necessary cookies will prevent the service from functioning correctly.
Changes to this policy
We will update this policy if we introduce new cookies or change how existing ones are used. Material changes will be communicated via email.
Contact
Questions about our use of cookies: privacy@usepatien.com
Defo Labs LTD (trading as Patien)
128 City Road, London, EC1V 2NX, United Kingdom