Only a few cases have examined the validity of Clickwrap licenses. Nevertheless, in cases where its validity has been challenged, the terms of the contract have generally been maintained: the clickwrap method was given to the court in ProCD v. Zeidenberg, 86 F.3d 1447 (Cir. 7, 1996), where Zeidenberg acquired a CD-ROM prepared by ProCD containing a compilation of a database of telephone directories. After purchasing this CD-ROM, Zeidenberg installed the software on his computer and then created a website that offered visitors the information contained on the CD-ROM at a lower price than ProCD charged for the software. Prior to purchasing the Software, Zeidenberg may not have been aware of any prohibited use or distribution of the Product without ProCD`s consent. However, as he was preparing to install the software on his computer, the software license appeared on his computer screen and did not allow him to proceed with the installation without signaling his acceptance by clicking on his consent in a dialog box. The court ruled that Zeidenberg accepted the offer and the terms contained in the license by clicking on the dialog box. Zeidenberg was given the opportunity to read the license terms before clicking on the acceptance box. The court also found that Zeidenberg could have rejected the terms of the contract and returned the software. (Id.).   The content and form of clickwrap agreements vary considerably. Most clickwrap contracts require the end user to express consent by clicking an OK or Accept button in a dialog box or pop-up window.
The name „clickwrap” derives from the use of „shrink film contracts” commonly used when purchasing box software that „contains a notice that by tearing the shrink film, the user accepts the terms of the software it contains.”  Recently, in the El Majdoub case (Case C-322/14), the ECJ held that click-wrap agreements are acceptable in certain circumstances as evidence of the adoption of general conditions within the meaning of Regulation (EC) No 44/2001 (now replaced by Regulation (EU) No 1215/2012, also known as the „Brussels I Recast Regulation”). In Register.com, Inc.c. Verio, Inc., 356 F.3d 393 (Cir. 2, 2004), the court described a clickwrap license, although the license in question was distinguished from a clickwrap license. Essentially, under a clickwrap contract, potential licensees are presented with the proposed license terms and are required to expressly and unambiguously declare either consent or rejection before accessing the product. A click-encapsulation license displays a message to the user on their computer screen asking them to express their acceptance of the license terms by clicking an icon. n12 The product can only be purchased or used by clicking on the symbol. For example, if a user tries to obtain Netscapes Communicator or Navigator, a webpage appears with the full text of the Communicator/Navigator license agreement. The question is clearly visible on the screen: „Do you accept all the terms of the previous license agreement? If so, click the Yes button. If you select No, Setup closes.