Uprkos tragu korišćenja, stvar je očuvana.

Uprkos means despite / in spite of.

It normally takes the dative case:

• uprkos tragu = despite the trace/sign
• uprkos problemima = despite the problems

So in this sentence, trag changes to tragu because uprkos requires dative.

Because trag is in the dative singular.

The basic form is:

• trag = trace, mark, sign

After uprkos, Serbian uses the dative:

• uprkos tragu = despite the trace/sign

So this is a grammar requirement, not a different word.

Korišćenja is the genitive singular of korišćenje.

Here it depends on trag:

• trag korišćenja = literally a trace of use
• more naturally in English: signs of use, wear, evidence of having been used

This is a common Serbian noun + genitive structure:

• trag vremena = trace/sign of time
• znak umora = sign of tiredness
• miris kafe = smell of coffee

So korišćenja tells us what kind of trace it is.

Literally, it means a trace of use.

In natural English, depending on context, it could mean:

• signs of use
• wear
• minor wear
• evidence that it has been used

This kind of phrase is very common in descriptions of second-hand items, furniture, books, electronics, and similar objects.

The singular here is understandable and can sound like a trace / some sign of use in a general sense.

But in many real-life contexts, especially product descriptions, Serbian often uses the plural too:

• Uprkos tragovima korišćenja, stvar je očuvana. = Despite signs of use, the item is well preserved.

So:

• tragu korišćenja = more like a trace/sign of use
• tragovima korišćenja = signs of use, often more natural if there are visible marks

Both can work, but the nuance is slightly different.

Stvar literally means thing.

In this sentence it refers to some item / object / article. Serbian often uses stvar as a general word when the exact object is not specified.

Depending on context, English might translate it as:

• thing
• item
• object
• piece

So stvar je očuvana means something like the item is preserved / in good condition.

Očuvana means preserved, well kept, or in good condition.

It comes from the verb očuvati / čuvati, related to the idea of keeping, preserving, or maintaining something well.

In context, stvar je očuvana usually means:

• the item has been well preserved
• the item is in good condition
• the item remains well kept

Because it agrees with stvar, which is a feminine singular noun.

Agreement in Serbian works like this:

• masculine singular: očuvan
• feminine singular: očuvana
• neuter singular: očuvano

Since stvar is feminine:

• stvar je očuvana

If the noun were masculine, for example predmet:

• Predmet je očuvan.

It is best understood as a past passive participle used predicatively, and in practice it often feels very adjective-like.

So:

• očuvana agrees like an adjective
• together with je, it gives the meaning is preserved / has remained preserved / is in good condition

Learners do not need to worry too much about the label at first. The important thing is that očuvan / očuvana / očuvano behaves like an agreeing descriptive form.

Because je is a clitic, and clitics in Serbian usually go in the second position of the clause.

So the normal order is:

• stvar je očuvana

You can also sometimes see:

• očuvana je stvar
  but that has a different emphasis and is much less neutral here.

For a learner, the key point is:

• Serbian short forms like je, sam, si, se, ga, mi usually want to stand near the beginning of the clause, not freely anywhere.

The phrase Uprkos tragu korišćenja is an introductory prepositional phrase:

• Despite signs of use, ...

A comma after such an opening phrase is common and natural, especially in written Serbian when the phrase sets the scene for the main statement.

So the structure is:

• Uprkos tragu korišćenja, = introductory phrase
• stvar je očuvana. = main clause

Yes. Uprkos and i pored can both mean despite / in spite of, but they govern different cases:

• uprkos
  • dative
    • uprkos tragu korišćenja
• i pored
  • genitive
    • i pored traga korišćenja

Both are possible. Very roughly:

• uprkos can sound a bit more formal or compact
• i pored is also very common and natural

Yes, it is understandable and natural, especially in a written or descriptive style.

It sounds like something you might read in:

• a used-item listing
• a catalog description
• a condition report
• an appraisal

Very natural alternatives include:

• Uprkos tragovima korišćenja, stvar je očuvana.
• I pored tragova korišćenja, stvar je očuvana.
• Stvar je očuvana uprkos tragovima korišćenja.

All of these mean roughly the same thing, with only small differences in style or emphasis.