Open Source Matters/Joomla! wants to both protect the specific trademark (“Joomla!”) while also encourage brand recognition, marketshare, and mindshare, by using derivatives of the name to connote a connection of the software to Joomla. Permission from OSM is required to use the Joomla name or logo as part of any project, product, service, domain or company name. One of the criteria to use the name Joomla in a domain name is to make clear that your organization is not a legal entity of OSM or the Joomla project. By displaying one of the following disclaimers on your website you help the project protecting the trademark, while you can be granted permission to use the name Joomla! in your domain name.

Here you can find the official OSM disclaimers:

 

For JoomlaDays:

In local language:

JoomlaDay™ events are officially recognized and licensed by, but not organized or operated by, Open Source Matters, Inc. (OSM) on behalf of The Joomla! Project™. Each JoomlaDay is managed independently by a local community. Use of the Joomla!® name, symbol, logo, JoomlaDay,™ and JDay™ and related trademarks is licensed by Open Source Matters, Inc.

In English following local language, if different:

JoomlaDay™ events are independently managed local events that are officially recognized by The Joomla Project™. Use of the Joomla!® name, symbol, logo, JoomlaDay,™ JDay™ and related trademarks is licensed by Open Source Matters, Inc.

 

For JUGs:

In local language:

Joomla! User Groups™ are officially recognized and licensed by, but not organized or operated by, Open Source Matters, Inc. (OSM) on behalf of The Joomla! Project™. Each Joomla! User Group, along with their events, are independently managed by a local community. Use of the Joomla!® name, symbol, logo and related trademarks is licensed by Open Source Matters, Inc.

In English following local language, if different:

Joomla! User Groups™ along with their events are independently managed by local groups that are officially recognized by The Joomla! Project™. Use of the Joomla!® name, symbol, logo, and related trademarks is licensed by Open Source Matters, Inc.

 

For Extension Developer (JED) and Service Provider (JRD) websites:

In local language and in English:

[Business name] and this site is not affiliated with or endorsed by The Joomla! Project™. Any products and services provided through this site are not supported or warrantied by The Joomla! Project or Open Source Matters, Inc. Use of the Joomla!® name, symbol, logo and related trademarks is permitted under a limited license granted by Open Source Matters, Inc.

 

For translation team websites that are not also JUG sites, and websites that are licensed to use Joo, Joom, Jumla or Joomla in their domain name or as a prominent portion of site branding under a conditional use license:

In local language and in English:

[URL] is not affiliated with or endorsed by The Joomla! Project™. Use of the Joomla!® name, symbol, logo and related trademarks is permitted under a limited license granted by Open Source Matters, Inc.

 

Rules Regarding Display of Disclaimers:

This does not change the existing requirement that for sites in a language other than English, that:

The disclaimer must appear in both English (the language of the trademark registration) and in the language of the site's content (required to constitute legal notice to visitors in most countries.)

It is proposed that the minimum font requirements be restated as follows:

The disclaimer must be displayed no smaller than 8 points / 8 pixels font size using a sans-serif font (or 10 points / 10 pixels font size for serif fonts) for 96ppi displays or the visual equivalent for higher density displays. For smaller devices, it must be of sufficient size to be sufficiently readable on the visitor's display device to constitute legal notice. The use of relative units is encouraged; 80% of body font size also meets this requirement.

The font color and background color must be selected to maintain a minimum contrast of 4.5:1, meeting WCAG II requirements applicable to the display of normal text.

Applicability:

This is a go-forward change applicable to newly approved Joomla! User Groups (JUGs), JoomlaDay events (JDays), Joomla! Resources Directory listings (JRD), Joomla! Extensions Directory listings (JED), and such other Community services as The Joomla! Project may implement.

For existing sites, an update of the disclaimer should be implemented on the next site redesign. Existing sites up for renewal of their existing listing that are have not changed their site design since the previous renewal will be encouraged but not required to update their disclaimer as long as the disclaimer that is displayed includes the previously approved language applicable to "otherwise licensed" websites, above. No previously approved site will be "delisted" or unpublished for having a legally adequate but out of date disclaimer.