I přes správnou registrační značku úřad poslal pokutu.

I přes means despite, in spite of, or more literally even despite.

• přes by itself often means across / over / through
• but (i) přes + accusative is also a common concessive expression meaning despite
• the i adds emphasis, something like even

So I přes správnou registrační značku... means Despite the correct registration plate...

No. In this sentence, i does not mean and.

Czech i can mean different things depending on context, such as:

• also
• even
• sometimes and in certain fixed uses

In i přes, it has an emphatic meaning: even despite or simply despite.

Because přes in this meaning takes the accusative case.

So the whole phrase after i přes has to be accusative:

• správná registrační značka = nominative
• správnou registrační značku = accusative

This is why both the adjective and noun change to the appropriate accusative forms.

Because Czech adjectives do not all decline the same way.

• správná is a regular hard adjective, so in feminine singular accusative it becomes správnou
• registrační is an adjective ending in -í, and adjectives of this type keep -í in both feminine nominative and accusative singular

So:

• správná → správnou
• registrační → registrační

That is completely normal Czech grammar.

It means a vehicle registration plate, often translated in everyday English as license plate.

Literally:

• registrační = registration
• značka = mark / sign / plate

In official Czech, registrační značka is the standard term. In casual speech, you may also hear older or colloquial expressions like SPZ.

Because pokuta is the direct object of the verb poslal.

• nominative: pokuta = a fine
• accusative: pokutu = a fine, as the thing being sent / imposed

So úřad poslal pokutu means the office/authority sent a fine.

Because úřad is in the nominative, and pokutu is clearly accusative.

Even though Czech word order is flexible, the grammar still tells you the roles:

• úřad = the office/authority → subject
• pokutu = the fine → object

Also, the verb form poslal matches a singular masculine subject, which fits úřad.

Because Czech has no articles.

So:

• úřad can mean the office, an office, or the authority
• pokutu can mean a fine or the fine

The exact meaning comes from context, not from an article like in English.

Yes, but mostly for emphasis, not basic grammar.

Starting with I přes správnou registrační značku puts the contrast first:

• Despite the correct registration plate, the office sent a fine.

This highlights the surprising part before you hear the main action.

Other word orders are possible in Czech, for example:

• Úřad poslal pokutu i přes správnou registrační značku.
• Úřad i přes správnou registrační značku poslal pokutu.

These are similar in meaning, but the original sentence emphasizes the despite idea more strongly.

Yes, it is understandable and natural enough, especially in everyday language.

Literally it means sent a fine. This works well if the idea is that the authority issued or mailed the fine.

Depending on style, Czech could also use more formal verbs such as:

• udělil pokutu = gave/imposed a fine
• uložil pokutu = imposed a fine

So poslal pokutu sounds a bit more concrete and everyday: the fine was sent out.

Yes, very likely.

Because of i přes (despite), the sentence implies that the fine was sent even though the registration plate was correct. That creates a sense of contradiction:

• the plate was correct
• but the authority still sent a fine

So the sentence strongly suggests an error, an unfair decision, or at least an unexpected result.

It can suggest either, depending on context, but in many real situations it would probably mean the correct registration number/plate identification, not necessarily the physical metal plate itself.

In other words, it often means something like:

• the correct license plate was recorded
• the correct registration identifier was provided

So the sentence may be talking about administrative data rather than the physical plate on the vehicle.