Change, Loss, Theft of Documents
EU nationals
You are obliged to report any change of your surname, marital status, and the data contained in your residence card. If you do not have a residence card, these changes are to be reported to the Foreign Police. If you have a residence permit/certificate, report the changes to the MOI.
https://www.mvcr.cz/mvcren/article/eu-citizens-and-their-family-members.aspx
Nationals of non-EU countries
Reporting changes
If you are not a national of EU/EEA/Switzerland, you are particularly required to report any changes in your name/surname, marital status, information indicated in your passport or ID documents, residence permit etc. within 3 business days.
Reporting a change in the place of residence – within 30 business days:
- if you have a long-term visa, then this duty only applies in the event that this change in your place of residence will last for over 30 days.
- if you have a long-term residence or permanent residence permit, then this duty only applies in the event that such a change in your place of residence will last for over 180 days.
Reporting loss, destruction, damage or theft of documents
within 3 days of the date of the event. If this happens in the Czech Republic, you should report it to the authority which issued the document. If this happens elsewhere, you should report it to a Czech embassy. If you later find or obtain a document that was previously reported lost or stolen, you must report this too.
Reporting loss or theft of travel documents
This must be reported immediately to the police.
https://www.mvcr.cz/mvcren/article/the-duties-of-foreign-nationals.aspx