Ask a Business Lawyer. Get Business Law Questions Answered ASAP.
In general, a trademark claim may be filed by a party that holds a trademark on a brand name (such as "Ugg") either because another party is using the exact name they have a trademark on and/or another party is using a name or mark that can "confuse" or "mislead" the public into thinking that the item or product they are selling is manufactured by or associated with the party who owns the trademark.
You would need to have an attorney who works in intellectual property law or patent law review your designs and compare them to the 50+ trademark registrations owned by Ugg, which you can see by searching the US Patent and Trademark Office's online search (http://tess2.uspto.gov/bin/gate.exe?f=tess&state=bblnfu.1.1) to determine if the use is a direct violation, how easy it would be for consumers to be mislead or potentialy mislead, what the likelihood of a lawsuit would be, whether you can use the name, and whether you would need to make any changes to your design or name to allow you to use it and what those changes might be.
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).