About Us

Mr Serial Key

Mr Serial Key is a brand with offices dedicated to our free English-speaking Customer Service. We’ve been operating in the IT market for over 18 years, with 350k+ customers served by our team of experts. Mr Serial Key is among the digital market leaders in the global software retail segment. We work hard to offer efficiency, professional service, and protect the environment. Our business model is 100% digitalized and our products are only delivered via email to cut pollution and packaging waste. Mr Serial Key is an Eco-Friendly Company!

Competitive prices, instant delivery, secure payments, and our free specialized support in ENGLISH are our key strengths and source of pride across our team.

We use the safest payment methods

Is Marketing your job and you want to collaborate with us?

Mr Serial Key has always aimed at creating partnerships and collaborations of all kinds with those who work in the advertising sector. We have also activated an Affiliate Program on our platform in order to give to those who collaborate with us the maximum freedom to manage their advertising campaigns.

Our company specializes in the sale of software developed by Microsoft and other providers, and operates at a national and international level. In just a few years it has managed to establish itself as a leader in the sector because the work team comprises young and dynamic individuals with IT and management experience spanning decades, ensuring specialized customer service while maintaining high and competitive standards. We provide our services to both private and business customers, and our team is always ready to offer assistance and guidance in order to meet any and all needs and solve any type of problem.

We purchase and resell Microsoft licenses, Microsoft operating systems and Microsoft Office packages unused by businesses and companies for reasons of migration to cloud or subscription services, thus restoring value to these unused assets by reintroducing them into the international market at affordable prices, with savings of up to 80% compared to base price.

Are our licenses legally compliant?

Thanks to the judgment issued by the Court of Justice on July 3, 2012, (c-128/11) which legitimized the sale of refurbished software, we can now offer substantial savings to our customers and our services as a reliable provider. Within the framework of current legislation, we work hard to source and test software from companies all across US to offer genuine Microsoft licenses which are fully compliant with Microsoft terms and applicable US Software Directives. 

Judgment of 2012:

– “ECJ, judgment of 3.7.2012, Case C-128/11”

Software producers cannot defend themselves against the resale of used software. The exclusive right to distribute the program copy is exhausted with the first sale. In this judgment, the Court states that the principle of exhaustion of the right to distribution applies not only when software copies are sold on data carriers but also when they are distributed by downloading from the company’s website.

Judgment of 2016:

– “Judgment of the Münster Public Procurement Chamber of 01.03.2016, Ref. VK 1-2/16”

The exclusion of already used software from the tenders violates public procurement law. The Public Procurement Chamber of the Government of Münster thus clarified that used software can no longer be excluded from tenders. The commitment to new software from Microsoft violates the principle of nUStrality in the tendering process. Such a restriction could no longer be objectively justified. Used licences are not deviations from the original. On the contrary, they cannot be distinguished from the original version. Mr Serial Key recommends that purchasers of used software obtain a certificate certifying that the copy has been uninstalled. This could be agreed upon in the contract by a so-called exemption agreement. A further marking of the rights chain is not necessary and cannot be claimed.

Judgment of 2013:

– “Judgment of the Federal Court of Justice of 17.7.2013, Case I ZR 129/08”

With its decision of 2013, the BGH confirmed that the trade with used software licenses is lawful. About one year after the US Court of Justice, the BGH also dealt with the legal situation of the trade with used software licenses. It confirmed the decision of the ECJ in its entirety.

Judgment of 2014:

– “Federal Court of Justice (BGH), judgement of 11.12.2014, file number I ZR 8/13”

The Federal Court of Justice (BGH) ruled that the ECJ’s ruling is also relevant for volume license agreements and their splitting. With this ruling, the BGH rejected Adobe’s appeal in its entirety. Therefore, it now applies that software licenses from volume license agreements may be sold individually. The purchase of individual used licenses from volume licenses is thus legally secure and is in no way risky for the buyers of used software.

Judgment of 2016:

– “OLG, judgment of August 2016, ref. 406 HKO 148/16”

The Higher Regional Court of Hamburg has decided that no disclosure of the rights chain can be demanded. With this decision, the Higher Regional Court prevents the statement that the disclosure of the rights chain, i.e. the previous owner of a license, is necessary for the trade with used software.