Q: hello, is there any patent about changing phase in welding machines?
A:
Short answer is that I do not know.
Good news is that there are several free online tools to do patent searching. I gave a talk on these tools
October 2016 presentation at the RTP Frontier as part of the lecture series for Triangle TechBreakfast. Teaches entrepreneurs on how to perform searches for relevant patent applications and issued patents.
Here is a link to my slide set for that talk and the slides will give you pointers on how to use these tools. When you find anything that seems particularly relevant, it is wise to have a patent attorney may a final call on whether that patent is a impediment to your freedom to operate in the manner you want. It is possible for example, that the patent you find may be expired or lapsed as it was not renewed by paying the required maintenance fee. It could be that the negotiations with the patent examiner to get the claims issued permanently narrowed them.
I hope this helps.
Kevin E Flynn
Justia Ask a Lawyer is a forum for consumers to get answers to basic legal questions. Any information sent through Justia Ask a Lawyer is not secure and is done so on a non-confidential basis only.
The use of this website to ask questions or receive answers does not create an attorney–client relationship between you and Justia, or between you and any attorney who receives your information or responds to your questions, nor is it intended to create such a relationship. Additionally, no responses on this forum constitute legal advice, which must be tailored to the specific circumstances of each case. You should not act upon information provided in Justia Ask a Lawyer without seeking professional counsel from an attorney admitted or authorized to practice in your jurisdiction. Justia assumes no responsibility to any person who relies on information contained on or received through this site and disclaims all liability in respect to such information.
Justia cannot guarantee that the information on this website (including any legal information provided by an attorney through this service) is accurate, complete, or up-to-date. While we intend to make every attempt to keep the information on this site current, the owners of and contributors to this site make no claims, promises or guarantees about the accuracy, completeness or adequacy of the information contained in or linked to from this site.
