brand logo

Hello.
I am a private entrepreneur from Russia, engaged in the development and use of sites in Drupal. For my work I have produced a logo and print to stamp, which is partly used image Druplicon.
I read that I need to obtain permission from the owner of the rights to use the image of Druplicon, in some cases.
Could you help me to determine the necessity of getting permission for this logo usage?
My logo = http://dl.dropbox.com/u/1032791/drupalkot_mini.png
My stamp = http://dl.dropbox.com/u/1032791/drupalkot-tatu5.png

Thank you.

Update (04-03-2013): Adding source file
Update: wordmark fixed. Thanks to cweagans!

This is a D8 logo proposition. Please give feedback.

Esta es la propuesta de logo, lo había hecho ya hace un tiempo a trás y lo había publicado en el grupo de Drupal Panamá.

Espero les guste, saludo.

A discussion worth checking out is this one on a CMS brand survey which amazon posted to the Drupal Group Marketing of Drupal. It references the following survey:
http://www.waterandstone.com/downloads/2008OpenSourceCMSMarketSurvey.pdf

I'm no marketing expert, but it seemed to me that while awards and other trends show Drupal surpassing most, Joomla were kicking our butts when it came to marketing and PR. However Amazon had a pretty good answer to that, though I think there is still much for Drupal to do on the marketing end, and this survey could be some help.

Overall it still looks healthy for Drupal, with Wordpress dominating, Joomla second, and Drupal third and everyone else a looong way off. It's interesting to note that technical proficiency is quite out of tune with marketing, with Drupal (possibly) under-performing, but doing vastly better than, for example, Plone, which has a lot of positives, but is lagging badly in this survey.

Grant

[Also posted in http://groups.drupal.org/drupal-org-redesign-analysis]

I know I am weighing in on a sensitive topic. I found that out yesterday today with my poorly received attempt at a humorous blog post entitled "Decapitate Drupal, please". I was unprepared for the negative response I received (though I did get some positive response as well). Someone rightly pointed out that Drupal Planet was not the right place for the discussion and suggested I come here. So, here I am.