Answers.Body: <p>I think the key here is if you are trying to profit from it.  If you are doing this as a hobby, aka for fun, you have nothing to worry about.  If you are trying to sell the model and/or instructions, then you risk a friendly "Cease and Desist" letter from the Lego Group.  </p>
  
  <p>Here is a paragraph from their "Fair Play Brochure":  </p>
  
  <p>"For this reason, certain guidelines have
  been developed to outline the proper
  use of the LEGO Group’s trademarks and
  copyrighted material for non-commercial
  purposes in domain names and websites.
  The LEGO Group’s trademarks and
  copyrighted material may NEVER be
  used by unrelated third parties for their
  own commercial or marketing purposes,
  unless formal permission or a written
  licence has been granted by the LEGO
  Group."  </p>
  
  <p>Fair Play Brochure: <a href="https://www.lego.com/cdn/cs/legal/assets/blt1a4c9a959ce8e1cb/FairPlayBrochure.pdf" rel="nofollow noreferrer">https://www.lego.com/cdn/cs/legal/assets/blt1a4c9a959ce8e1cb/FairPlayBrochure.pdf</a>  </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-08-22T01:44:50.693Z
Answers.LastActivityDate: 2019-08-22T05:24:56.740Z
Answers.LastEditDate: 2019-08-22T05:24:56.740Z
Answers.UserDisplayName: JohnnyB
Answers.Body: <p>I see this sort of thing done regularly and never heard of anyone being shut down. Even really famous builders like JKBrickworks <a href="https://jkbrickworks.com/swimming-shark-redux/" rel="nofollow noreferrer">publish modifications for official sets</a> and he would definitely be on Lego's radar having had two sets created through the Ideas program.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-08-22T00:11:58.993Z
Answers.LastActivityDate: 2019-08-22T00:11:58.993Z
Answers.UserDisplayName: Craig
Body: <p>Are there any copyright issues in the case of creating a MOC based on a Lego Technic set, and then publishing my own instruction and/or video for it?</p>
  
  <p>Regards,
  Pavel</p>
  
Tags: <instructions><moc><patent>
Title: Publishing instructions for MOC based on Lego Technic set
UserDisplayName: se_pavel
ThreadText: # Publishing instructions for MOC based on Lego Technic set
  
  (Asked by: username_0 on 2019-08-21)
  
  Are there any copyright issues in the case of creating a MOC based on a Lego Technic set, and then publishing my own instruction and/or video for it?
  
  Regards,
  Pavel
  
  **Tags:** instructions, moc, patent
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2019-08-22. Score: 2
  
  I think the key here is if you are trying to profit from it. If you are doing this as a hobby, aka for fun, you have nothing to worry about. If you are trying to sell the model and/or instructions, then you risk a friendly "Cease and Desist" letter from the Lego Group.
  
  Here is a paragraph from their "Fair Play Brochure":
  
  "For this reason, certain guidelines have
  been developed to outline the proper
  use of the LEGO Group’s trademarks and
  copyrighted material for non-commercial
  purposes in domain names and websites.
  The LEGO Group’s trademarks and
  copyrighted material may NEVER be
  used by unrelated third parties for their
  own commercial or marketing purposes,
  unless formal permission or a written
  licence has been granted by the LEGO
  Group."
  
  Fair Play Brochure: <https://www.lego.com/cdn/cs/legal/assets/blt1a4c9a959ce8e1cb/FairPlayBrochure.pdf>
  
  
  ---
  
  ### Answer by username_2 on 2019-08-22. Score: 1
  
  I see this sort of thing done regularly and never heard of anyone being shut down. Even really famous builders like JKBrickworks [publish modifications for official sets](https://jkbrickworks.com/swimming-shark-redux/) and he would definitely be on Lego's radar having had two sets created through the Ideas program.
  
  
  ---
  
  