What are the consequences of overstaying Schengen zone for 28 days in 90 days period with a valid visa for the next 3 months?

I'm a Russian citizen holding a Schengen visa valid from 01.08.14 till 31.07.15

For the period from 20.11.14 to 18.05.15 I overstayed for 28 days. The immigration officer at Swiss border hadn't mentioned anything and also hadn't put any specific stamp in my passport.

I'm planning to apply for a national Swiss visa and wondering what the consequences of my overstay can be...

Is such visa violation considered to be severe or not?
Will I be obliged to pay the penalty if at all and when do you think is safe to apply for the long-stay visa to Switzerland ?
Is it correct that I cannot enter Schengen zone again till August at least? (the online calculator indicates 17/08/15 as the earliest date of possible entrance)

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What happens if I overstay Schengen 90 days?

The Schengen law states that you can't stay in the Area for more than 90 days. If you do, you're subject to a fine and possibly deportation and being banned from re-entering the Schengen Area. How that rule is enforced, though, varies greatly from one country to another.

Can I stay in Schengen Area after my visa expires?

If you apply after your visa expires, even just a day later, then you will be deported for overstaying your visa, despite of your reasons. Therefore, take care to apply at least a week before your current Schengen short-stay visa expires.

Can I get a visa to stay in Europe longer than 90 days?

The 90-Day Limit Once you are allowed to enter the Schengen Area \u2014 with just your passport or with a short-term visa \u2014 you are ONLY permitted to stay for 3 months (90 days) in any 6 month period (180 days).

Can you stay in Europe for more than 3 months after Brexit?

Now that the UK is outside the EU, British passport holders can stay for a maximum of 90 days per 180-day period. UK passport holders can cross an external EU border using just a valid passport and stay anywhere in the Schengen Area for up to 3 months.

Overstaying in the Schengen Zone - How to Extend Your Stay in Europe UPDATED

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

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