Trade names and trademarks
The use of trade names and/or trademarks that are asserted and/or registered by their owners for designating particular products or services should be avoided in ETSI deliverables. Instead a corresponding standard should be used or a correct designation or a generic description should be given (see example).
EXAMPLE 1: Instead of "ZigBee®" refer to IEEE 802.15.4TM.
If, in exceptional circumstances, the use of trade names/trademarks cannot be avoided, their nature shall be indicated by the symbols TM for any trademark or ® for a registered trademark. The use of this sign is trickier than ™ since it can only be used when a trademark is registered. If badly used it can be considered (legally) as an offence.
If you want to check if it is legally protected, it is recommended to consult one of the following websites (non-exhaustive list):
Further to this it is also recommended to refer to the organisation's trademark policy webpage.
The attribution notice should be mentioned only once, in a note, the first time the trade name or trademark (e.g. OpenStack®) appears in the ETSI deliverable.
NOTE: The OpenStack® Word Mark and OpenStack Logo are either registered trademarks/service marks or trademarks/service marks of the OpenStack Foundation, in the United States and other countries and are used with the OpenStack Foundation's permission. ETSI is not affiliated with, endorsed or sponsored by the OpenStack Foundation, or the OpenStack community.
More details can also be found in clause 4.2 of the ETSI Drafting Rules and in the "communiqué" Manual of signs available on the editHelp! website.