4 votes

How can you renew an expired patent?

A patent has a term of twenty years from the date of its first filing. It should be noted that once these twenty years are over, a patent is no longer in force. However, there are certain scenarios ...
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3 votes

Parent patent expired due to non-payment - are issued continuations still valid?

Term of a patent is 20 years from the date on which the application for the patent was filed at the US Patent Office. Continuing Patent Applications (continuation, CIP and divisional) claim benefit ...
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2 votes

Is an expired patent in the public domain?

It is important to remember that a patent does not give anybody the right to do what the patent covers. For example, if I had a patent on a more effective delivery system for MDMA or LSD, having a ...
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  • 693
2 votes

Is an expired patent in the public domain?

If you're sure that the patent has really expired, then the specific invention in the patent is no longer patent-protected, so the patent holder can't sue over it. However, make sure of this, because ...
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  • 31
2 votes

Copyright expiration

Copyright is not applicable, so I am assuming you mean "enforceable". The patent in question has a Filing Date of May 20, 1959, a grant date of April 25, 1961, and is a continuation from an ...
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  • 1,775
2 votes

Possible to file for a patent, despite super broad, expired patent already existing?

Short answer is no. Long answer is possible based on novelty and inventive step. It sounds like you need to spend $500-$3k and ask a patent agent or attorney to review your technology and your prior ...
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  • 223
2 votes

Is it possible to re-assign Patent US 4,023,765 A?

Interestingly, the cover sheet for this patent is missing, which contains most of the pertinent information for calculating the expiration date of a patent. However, from checking the information ...
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  • 1,775
2 votes

My grandfathers patent, expired?

This patent has been expired since 1927, and since then it has been freely available for anyone to manufacture and sell. If by "claim", you mean a patent model (miniature model of the invention), ...
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  • 1,775
2 votes

Expired Patent can we apply for a new patent with similar idea

It really depends on whether your similar idea has new, non-obvious idea as part of it. If so, you might be able to get patent coverage for the new and presumably improved part. What is covered by the ...
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  • 9,607
2 votes

Too late to renew my Patent?

You can petition for acceptance of a late payment - from the USPTO web site - A petition related to acceptance of delayed payment of a maintenance fee after expiration of the patent based on ...
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  • 25.3k
2 votes
Accepted

If a patent expire can someone else repatent it?

The basic requirements for a patent is that the idea be useful, novel and non-obvious. If someone has already patented an idea, then you can't re-patent it because it would not be novel since someone ...
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  • 9,607
1 vote

What is the time limit for reviving an expired patent?

The patent was pre-AIA, and therefore the best-case scenario is that it expired 17 years after issue. Therefore, as of Dec. 29, 2015, the patent is irretrievably in the public domain.
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1 vote

Can fee related expired patent be renewed?

Google used to have trouble calculating the expiration date where there is a patent term extension. I hope they fixed that, but in case they haven't, if you are really concerned about this patent, you ...
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  • 693
1 vote
Accepted

Is it safe to sell a patented product that is expired due to fee and the anticipated expiration of the patent is in 2 years from now

It would be best if you were to list the actual patent number so we could check your interpretation. That said, if it is a Japanese patent and there is no US equivalent then it should not impact your ...
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  • 9,607
1 vote

No opposition filed within time limit

When a European patent application is in order for grant, it may be opposed within 9 months by any person (EPC art 99). This is initiated by another person filing a notice of opposition. Consequently,...
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  • 7,033
1 vote

Is this a current patent: CA2277698A1

Jeff, it is a patent application, not a granted patent. The persistent identifier is: lens.org/134-360-901-561-277. Checking in its legal status, it is dead.
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1 vote

Is there any value to this patent?

Although this patent was expired by 1950 and is entirely in the public domain, it still affects the modern patent landscape by serving as prior art for new applications, as these citations from recent ...
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  • 1,775
1 vote

Is there any value to this patent?

Assuming this is the patent you are talking about: https://patents.google.com/patent/US1808692A/en to Earl W. Sudduth This patent is long expired and is now public domain, so it does not have any ...
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1 vote

US 2,038,852 A (April 1936) - Who was the manufacturer?

For a patent that old, you will probably be able to find the information in the Official Gazette of the United States Patent Office. Look for "Abram N Pasman, assignor to" in association with the ...
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  • 1,775
1 vote

Error in patent, involving confusion of bacterial names

There are several important considerations regarding the validity of this patent. First, the patent is already expired (it was granted from July 1, 1980 to July 1, 1997). However, I think this is an ...
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  • 1,775
1 vote

is this patent ep1020784a2 expired?

Application has been deemed withdrawn since 2004 according to EP Register: https://register.epo.org/application?lng=en&number=EP00300235
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1 vote

Patent specification

In order to answer your question, you will need to examine the claims. Most of the claims are detectors and substances, but there are two method claims, shown in full below: I claim: A ...
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  • 1,775
1 vote

there a patent on my idea but it is expired how do I get the rights?

Unpaid maintenance fees expire the patent I believe. http://www.uspto.gov/web/offices/pac/mpep/s2501.html "Unless payment of the applicable maintenance fee is received in the United States Patent ...
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  • 429
1 vote

Has this patent expired in Canada but not in the US? [US5,662,332]

See patents are territorial rights means country by country basis. In US transition rule of 17 years after grant gave some patent extra protection beyond 20 years which created lot much of doubt in ...
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  • 2,115
1 vote
Accepted

Parent patent expired due to non-payment - are issued continuations still valid?

Ok first thing First all patents except US6,123,332 have expired for non-payment. I have to dig more for your next question about parent expiry affecting child expiry with respect to maintenance fee. ...
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  • 2,115
1 vote

What is a "Lapsed Patent" and which concepts (if any) may still be protected by this Patent?

This is important - A lot of the info on the Internet about this is out of date. They changed the rule on this recently. (Recently = effective December 18, 2013) This web page summarizes the ...
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  • 31
1 vote

How can you renew an expired patent?

If a patent is no longer in force due to its owner unintentionally missing a maintenance payment the owner can petition for its revival. If it expired at the end of its term it is done. If you are a ...
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  • 25.3k
1 vote

How can you renew an expired patent?

No, unfortunately once a patent has expired, that's the end of it. The philosophy behind patenting something is that in exchange for sharing your invention with the world, the government will give ...
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1 vote

Is this patent expired?

Design patents filed before Dec 18, 2013 have a patent term of 14 years from the date of grant. See http://www.uspto.gov/web/offices/pac/mpep/s2701.html#sect2701. The design patent you listed was ...
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  • 21

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