Good day, yes, as a foreign freelancer you can pursue an unpaid business claim against a Slovak company in Slovakia. The main determinant will be whether you can prove the order, the scope of work, the price, the delivery of outputs, and the maturity of invoices. An invoice alone is usually not sufficient; you must also prove the actual execution and delivery of services, which, based on your emails, satisfaction confirmations, NDAs, contracts, and communication, seems evidentially usable. As the first step, I recommend a pre-litigation demand for payment, ideally sent by a lawyer.
The law does not require sending multiple reminders, but the demand is practically important so that the debtor cannot claim not to have known about the debt, the invoice, or the due date. The demand should state the exact amount, invoice(s), legal reason, payment deadline, account number, and a warning about court proceedings, default interest, and costs. If the Slovak company does not pay, the next step is usually a proposal for the issuance of a payment order, often electronically via summary proceedings, which is among the faster and, in terms of court fees, cheaper processes (6% of the claim’s value).
If the debtor files an objection, the matter continues as adversarial proceedings. The competence of the court depends on the contract; if you have not agreed on a different jurisdiction, for a Slovak debtor the proceedings usually take place before Slovak courts according to the company’s registered office, or via the summary proceedings.
If you are successful, you can claim the principal, default interest, and compensation of costs, including legal representation costs. In practice, the debtor’s debt may thus increase by attorney’s fees and the court fee. However, the creditor usually bears the costs first and then requests their reimbursement from the debtor. For assessment, I would need from you the contracts, NDA, invoices, proof of their delivery, communication with payment acknowledgments, evidence of work delivery, identification details of the Slovak company, agreed currency, due dates, any arbitration or jurisdiction clause, and information whether part of the price was already paid.
The fee for a consultation or demand must be determined after checking the documents; in enforcement, a flat fee for the demand and a separate fee for court proceedings are often agreed.
You may contact us regarding this matter.