No, they're not "public domain" until the copyright of the author expires. Just because they were sent to the patent office and issued as a patent does not changed the copyright ownership or duration.
However, an author of a patent application has, by statute, granted a limited right to others to reproduce the patent.
Most of the rules in the US Patent Office regarding copyright notice have not been subject to comprehensive update since the 1988 laws were changed to repeal the need to have a proper copyright notice on a publication in the USA if it was to have copyright protection.
Copyright of any creative work of authorship is now free, instantaneous and automatic, whether or not the copyright owner knows it or wants to enforce it, without requiring any copyright notice, nor any registration.
No, once a patent expires the invention is public domain and can never be patented again.
Once a patent reaches its full term, the inventions claimed in that patent become public domain forever.
No; many are protected by patent law. See the Google patent search below for examples.
Patent Office.
No sn data in the public domain.
Yes, examples of patent drawings can include detailed illustrations of the invention's design, structure, and functionality. These drawings are typically included in the patent application to provide a visual representation of the invention for better understanding and clarity.
Not available in the public domain. Try the US Patent Office
The key requirements for creating and submitting provisional patent drawings include ensuring that the drawings are clear, detailed, and accurately depict the invention. The drawings should also be labeled with reference numbers and include a brief description to explain the features shown. Additionally, the drawings must meet the specific formatting and size requirements set by the United States Patent and Trademark Office (USPTO).
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No, Albert Einstein did not patent his theory of relativity. The theory of relativity is a scientific concept, and it is not subject to patent protection. Einstein published his theory through academic papers and lectures, allowing it to become part of the public domain for scientific study and advancement.
Most of the images of Shakespeare are old enough that they are in the public domain. It's only new drawings or paintings of Shakespeare which may be copyrighted.