Slovakia is a party to the Patent Cooperation Treaty (PCT).

Hungary has not adopted national legislation based on or influenced by the United Nations Commission on International Trade Law (UNCITRAL) Model Law on Electronic Signatures.

The EU Directive on Audiovisual Media Services (AVMS) covers traditional broadcasting services as well as audiovisual media services provided on-demand, including via the Internet. Art. 13.1 provides for Member States to secure a minimum 30% share of European works in the catalogues as well as "ensuring prominence" of those works. "Prominence" involves promoting European works by facilitating access to such works using any appropriate means to ensure their prominence. The Directive has been implemented by Member States in different ways, ranging from very extensive and detailed measures to a mere reference to the general obligation to promote European works.
In Hungary, the EU Directive was transposed into domestic law through the amendment of Act CLXXXV on Media Services and Mass Communication of July 2021 (LXIII of 2019 law on the amendment of certain laws related to media services). According to Art. 20 of the Act, at least 30% of the total aggregated length of programmes made available in a given calendar year in the programme schedule of on-demand audiovisual media services must consist of European works, with a minimum of 10% comprising Hungarian works.
Furthermore, pursuant to Art. 136, a media service provider with significant influence that offers a linear audiovisual media service is obligated to allocate 2.5% of its annual advertising revenue to the promotion of new Hungarian cinematographic works. This obligation can be satisfied either through a payment to the Fund or by providing financial support for a new film production, as mutually agreed upon between the Fund and the media service provider.

According to Section 1 of the Domain Registration Policy, domains directly under the “.hu” public domain may be registered by:
(i) individuals who are citizens of the European Union (EU), the Council of Europe, the European Economic Area (EEA), the European Free Trade Association (EFTA), or a neighbouring country of Hungary, or who hold an identification document, passport, or driving licence issued by any of these states;
(ii) individuals holding a residence permit in Hungary; or
(iii) legal entities established, registered, or in the process of registration and operating under the law within the EU, the Council of Europe, the EEA, the EFTA, or a neighbouring country of Hungary.
As stipulated in Section 1.2.2.1 of the Policy, legal entities applying for a domain must provide the Registrar with the chosen domain name, the contact details of the administrative contact person, the postal address, notification e-mail address, telephone number, tax number, and the name of the legal representative.

Under Section 15/C of Act CVIII of 2001 on Electronic Commerce, as amended by Act XXIV of 2020 transposing the revised Audiovisual Media Services Directive (AVMSD, Directive (EU) 2018/1808), video-sharing platform services are subject to a notification requirement. In practice, the authorities require the notification to include an official registration number, which is available only to companies with a local presence in Hungary. According to industry reports, this procedural hurdle also affects other digital services and e-commerce providers.

The Consumer Rights Directive 2011/83/EU provides an updated framework aimed at encouraging online sales. The Directive has been implemented by the Act CLV of 1997 on Consumer Protection (as amended in September 2019).

Hungary has not signed the United Nations (UN) Convention on the Use of Electronic Communications in International Contracts.

Hungary has not adopted national legislation based on or influenced by the United Nations Commission on International Trade Law (UNCITRAL) Model Law on Electronic Commerce.

The European Union General Data Protection Regulation (GDPR) provides a comprehensive framework for data protection that applies to all EU Member States. Hungary implemented the GDPR by amending the Act CXII of 2011 on the Right to Informational Self-determination and on the Freedom of Information.

Under the EU Directive on Data Retention, operators were required to retain certain categories of traffic and location data (excluding the content of those communications) for a period between six months and two years and to make them available, on request, to law enforcement authorities for the purposes of investigating, detecting and prosecuting serious crime and terrorism. On 8 April 2014, the Court of Justice of the European Union declared the Directive invalid. However, not all national laws that implemented the Directive have been overturned. This is the case in Hungary. Under Art. 159/A of Act C of 2003 on Electronic Communications, internet service providers have to store connection data for 12 months at least.

Art. 159/A of Act C of 2003 provides that mobile service providers and ISPs must provide user data to the authorities upon request. The Constitutional Court found this law unconstitutional in 2022 and called on parliament to amend the legislation by the end of the year, but it is reported that parliament failed to comply.

The Directive 2000/31/EC (E-Commerce Directive) is the legal basis governing the liability of Internet Services Providers (ISPs) in the EU Member States and includes a conditional safe harbour. Not all Member States have transposed the relevant articles consistently, leading to divergent national case law that could cause legal insecurity on an EU level.
Under Section 7/3 of the Act CVIII on Electronic Commerce, which transposes Directive 2000/31/EC, service providers and intermediaries are protected from liability for third-party content. However, this exemption does not cover disguised advertising, as regulated in Section 14/A.

The Directive 2000/31/EC (E-Commerce Directive) is the legal basis governing the liability of Internet Services Providers (ISPs) in the EU Member States and includes a conditional safe harbour. Not all Member States have transposed the relevant articles consistently, leading to divergent national case law that could cause legal insecurity on an EU level.
Under Section 7/3 of the Act CVIII on Electronic Commerce, which transposes Directive 2000/31/EC, service providers and intermediaries are protected from liability for third-party content. However, this exemption does not cover disguised advertising, as regulated in Section 14/A.

According to Art. 6.2 of Act CXXVIII of 2016, which amends Act XXXIV of 1994 on the Police (and Act C of 2003 on Electronic Communications), telecommunications service providers are required to verify the identity of individuals before entering into a contract for prepaid mobile telephony services (SIM cards). If the identity verification is unsuccessful, the subscription contract cannot be finalised, and the service provider is prohibited from initiating service. Additionally, for contracts exceeding one year, identity verification must be repeated annually on the contract anniversary or through third-party data matching. This identity verification can also be conducted online, either prior to the contract's conclusion or during data reconciliation processes.

Although Art. 73 of Act CVIII of 2001 on Certain Issues of Electronic Commerce Services and Information Society Services provides that intermediary service providers are not required to monitor the content of the information they transmit, store, or provide access to, nor are they obliged to actively seek facts or circumstances indicating unlawful activity, subsequent EU legislation has introduced stricter obligations for certain categories of platforms.
In particular, Art. 17 of Directive 2019/790 on Copyright in the Digital Single Market (DSM Directive) mandates that providers of content-sharing services seek authorisation from rights holders and implement technical solutions to remove and prevent unauthorised uploads by their users (so-called upload filters), under penalty of losing their liability safe harbour. Further arrangements are envisaged for complaints and dispute resolution mechanisms. Such upload filters are reported to be a significant cost for online platforms. Graduated exemptions are expected to be put in place for new providers active in the EU for less than three years with a turnover under EUR 10 million and with fewer than five million users. The provision is subject to a challenge in the Court of Justice by Poland (C-401/19).
To implement Directive 2019/790, Hungary has adopted Act XXXVII of 2021, therefore making online content-sharing service providers partially liable for copyright violations on their platforms.