For questions regarding the expiration date of an issued patent.

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Patent expiration date [duplicate]

In reference to the patent: US6224497 when does this patent expire?
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When does it expire? [duplicate]

When does this patent expire, so there can once again be competition in the stun gun marketing, instead of a dominating monopoly? In reference to the patent: US6636412
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Is patent US 5,504,055 expired?

Is patent US 5,504,055 A, application Nr. 08/213,263 expired? It was filed on 15 Mar 1994 and issued on 2 April 1996.
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Has patent US 5,195,917 A expired?

Can anyone tell me if this patent has expired or how I can find out if it has? US 5,195,917 A tear apart stress relief doll. How long is a patent good for, is it the same for every patented ...
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1answer
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Has US 5,623,660 A expired?

In reference to the patent: US 5,623,660 A, titled System for regulating access to data base for purposes of data base management. It appears as though it has expired, according to this article. Is ...
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1answer
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My grandfathers patent, expired?

In reference to the patent: US 948,162 A I'm wondering if this patent has expired, and the process to claim it? This is my great-grandfathers invention.
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Patent Expiration

In reference to the patent: US 5,858,064 I think this patent has expired based on the priority date of August 22, 1995. Is that correct?
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1answer
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Replicating Tandy TRS-80 model 100 notebook computer for-profit

Are there any patents that would prevent someone from replicating the Tandy TRS-80 model 100 notebook computer, for instance putting a raspberry pi inside of it and then selling it? It has been over ...
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1answer
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Is US 6,608,366 B1 in the public domain?

In reference to the patent: US6608366 Is US 6,608,366 B1 in the public domain?
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Copyright expiration

In reference to the patent: US 2,981,578 I would like to know if the copy rights of this item are still in their period of validity.
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Status of US 6,151,713

In reference to the patent: US 6,151,713 Is this patent expired? Has anyone else patented it? Can I take over the patent and how much would it cost me?
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1answer
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Grant of patent US 5,095,151? Not OB listed?

In reference to the patent: US 5,095,151 A. Is this patent granted? If yes, then when is the expiry of the patent or the market exclusivity?
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1answer
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Do divisional, continuation, and continuation-in-part affect expiration dates for patents filed prior to June 8, 1995?

As noted in an answer regarding the expiration of US 5,618,582, the effective expiration date of the patent was calculated as: The patent application was filed on June 7, 1995 and issued on April ...
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When will patent US 6,797,357 expire?

In reference to patent US 6,797,357, "Three dimensional structures useful as cleaning sheets", when will it expire?
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Herceptin (US 7,560,111 B2) patent expiration [duplicate]

How do I analyze the expiration date of patent US 7,560,111 B2? It is a member of the famous Genentech's Herceptin.
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Filing, CIP, Con, PCT, Priority, etc and Expiration Date

I was wondering if someone would kindly help me figure out how to determine the expiration dates for a patent family, and which and how each is still in effect and until when. (I don't have any patent ...
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1answer
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Expiration date for patent 5824100 [duplicate]

In reference to the patent: US5824100 What is the expiration date for this patent? Thank you.
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2answers
357 views

Would expired patents for Moissanite reduce jewelry prices?

According to Wikipedia, the patents for Moissanite expire in 2015. Does it mean that the Moissanite jewelry will become cheaper?
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1answer
469 views

Expiry Date of a European patent

In reference to the patent: EP1807053A1 What is the expiration date of this patent?
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1answer
120 views

Patent issued in 2005 and now is ceased/expired due to failure to pay maintenance fees

If a patent has been claimed expired/ceased due to failure to pay maintenance fees, and I come in and assign the patent to myself (is this possible) I would also pay all the fees up to date. The ...
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1answer
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Patent issued in USA only, infringing patent issued in Germany

My patent was filed as an EPO originating in the USA and it took almost five years to prosecute. It has ultimately resulted in award of USA patent only. Two questions... 1) is there any jurisdiction ...
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3answers
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Can a patent filed more than 20 years ago still be valid?

I'm asking in particular about this patent. The filing year was 1991, so it is currently 23 years old. However, the fee status says "paid." Google Patents also does not mention anything about that ...
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1answer
71 views

Know that Patent expired or not [duplicate]

I had designed a similar invention like the Patent US5,934,963 but have found this patent was already in force. It seems to have lapsed and been re-instated several times... Can you determine the ...
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1answer
60 views

Expiration date of US 5,618,582?

I want to know the date of expiration of VanWinkel's Liquid Mask patent US 5,618,582.
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1answer
63 views

Expired patent - non-payment

hypothetical question. Let's assume someone else's patent has expired due to non-payment, and we release a product that that would potentially have infringed on it. Three months later they see our ...
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2answers
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Is an expired patent in the public domain?

From what I've been reading about US patents, once a patent has expired, it enters the public domain and can be freely used. The patent I was looking at was filed on 1/1999 and published in 10/2000. ...
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What is the expiration date of patent US 6,676,109?

Is patent US 6,676,109 for a rotary valve in favor of Kitz Corporation a design patent or a utility patent? What is the expiration date of the patent?
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3answers
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How do you determine a patent expiration date (US 7,055,282 B2)?

How can I determine the lifetime of a patent? For example, how can I tell when Patent US 7,055,282 B2 expires?
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1answer
199 views

When does US Patent 5,720,421 expire?

I am trying to determine when US Patent Number 5,720,421 will expire. Since it was pending before June 8, 1995, I would assume that it has a term of 17 years from the filing date and will be valid ...