Muutoksenhaku jatkuu siitä huolimatta, että vastine on saapunut.

Because it is a Finnish compound noun. Finnish very often combines words into a single written word when English would use two or more words.

Here:

• muutoksen = of change or of a decision being changed
• haku = seeking, application, or in legal language appeal

So muutoksenhaku is a fixed legal term meaning something like appeal or appeal process. In Finnish, compounds like this are normally written as one word.

This is because the first part of the compound uses the genitive form muutoksen rather than the plain nominative muutos.

So the structure is roughly:

• muutos = change
• muutoksen = of change
• haku = seeking

This kind of genitive-based compound is common in Finnish, especially in formal, legal, and administrative vocabulary. It often gives the sense of the seeking of X or a process related to X.

So muutoksenhaku is not something you should try to translate piece by piece every time; it is best learned as a set legal term.

Jatkuu is the 3rd person singular present tense of the verb jatkua, which means to continue.

It is in 3rd person singular because the subject is muutoksenhaku, which is singular:

• muutoksenhaku jatkuu = the appeal continues

A useful detail:

• jatkaa = to continue something
• jatkua = to continue, to go on

So here the process continues by itself, which is why jatkua is used rather than jatkaa.

Siitä huolimatta is a fixed expression meaning:

• despite that
• in spite of that
• nevertheless

In this sentence, it introduces a contrast: something continues even though something else has happened.

You should learn it as a chunk:

• siitä huolimatta, että... = despite the fact that...

It is very common in formal Finnish, especially in written language.

Siitä is the elative form of se:

• se = it / that
• siitä = from it / about it / out of it

In this expression, the important thing is that huolimatta normally goes with the elative:

• jostakin huolimatta = despite something

So:

• siitä huolimatta = despite that

When a whole clause follows, Finnish often uses this structure:

• siitä huolimatta, että...
• literally something like despite that, that...
• naturally: despite the fact that...

So the case is not random; it is required by huolimatta.

Huolimatta is usually treated as a postposition in expressions like:

• sateesta huolimatta = despite the rain
• ongelmista huolimatta = despite the problems

It comes after the noun or pronoun it relates to, unlike an English preposition, which comes before.

In siitä huolimatta, että..., the structure has become a very common fixed phrase meaning despite the fact that.... So even if the literal pieces seem unusual, the whole expression functions as one concessive connector.

Because että introduces the subordinate clause.

The pattern is:

• siitä huolimatta, että + clause

So here:

• siitä huolimatta = despite that
• että vastine on saapunut = that the response has arrived

In natural English, you would not usually translate the että separately. The whole thing becomes:

• despite the fact that the response has arrived or
• even though the response has arrived

On saapunut is the present perfect:

• on = has
• saapunut = arrived

So it means has arrived.

Finnish uses the present perfect when a past event is relevant to the current situation. That fits well here: the response has already arrived, but the appeal process still continues.

Compare:

• vastine saapui = the response arrived
• vastine on saapunut = the response has arrived

The perfect form makes the completed arrival feel more connected to the present situation.

Vastine means something like:

• response
• reply
• statement in response

In legal or administrative Finnish, it often refers to a formal written response submitted in a case.

In the subordinate clause:

• vastine on saapunut
• the response has arrived

So vastine is the subject of that clause.

The sentence is structured as:

• main clause first: Muutoksenhaku jatkuu
• concessive clause after it: siitä huolimatta, että vastine on saapunut

This is a very normal Finnish structure in formal writing.

It could also be rearranged:

• Siitä huolimatta, että vastine on saapunut, muutoksenhaku jatkuu.

That would still be correct. The meaning stays basically the same, but the emphasis changes slightly:

• original sentence: first states the main fact, then adds the contrast
• reversed order: first sets up the contrast, then gives the main result

Because Finnish normally uses a comma to separate a subordinate clause from the main clause.

Here the subordinate clause begins with että:

• ..., että vastine on saapunut

So the comma is standard Finnish punctuation. In formal writing, this is important and expected.

Yes, a sentence with vaikka would be possible, for example:

• Vaikka vastine on saapunut, muutoksenhaku jatkuu.

That would mean roughly the same thing: Even though the response has arrived, the appeal continues.

However, there is a difference in style:

• vaikka is simpler and more general
• siitä huolimatta, että is more formal and bureaucratic

In legal or administrative language, the longer expression sounds very natural.

Yes. It sounds quite formal, official, and legal-administrative.

Things that make it formal include:

• the legal noun muutoksenhaku
• the official-style noun vastine
• the connector siitä huolimatta, että

In everyday spoken Finnish, people would usually choose simpler words and a less heavy structure. But in official documents, this kind of sentence is very typical.