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Simple English definitions for legal terms

file-wrapper estoppel

Read a random definition: eques

A quick definition of file-wrapper estoppel:

File-wrapper estoppel is a legal term that refers to a rule that limits a patent holder's ability to claim that their invention is equivalent to another invention. This rule is based on the fact that during the process of obtaining a patent, the patent holder may have given up certain elements of their invention. As a result, they cannot later claim that those elements are equivalent to another invention. This rule is also known as estoppel on the record or file-wrapper estoppel.

A more thorough explanation:

Definition: File-wrapper estoppel is a legal principle that limits a patent holder's ability to claim infringement based on the doctrine of equivalents. It arises from the prosecution history of a patent, which is the record of communications between the patent applicant and the patent office during the process of obtaining the patent.

Example: Suppose a patent application claims a device with a certain feature, but the patent office rejects the claim as too broad. The applicant then amends the claim to exclude the feature and the patent is granted. Later, the patent holder sues a competitor for infringement, arguing that the competitor's device is equivalent to the patented device. The competitor could argue that the patent holder is estopped from making this claim because they surrendered the feature during the prosecution of the patent.

Explanation: This example illustrates how file-wrapper estoppel can limit a patent holder's ability to assert infringement based on the doctrine of equivalents. By amending the claim to exclude the feature, the patent holder effectively disclaimed it and cannot later argue that the competitor's device infringes based on that feature. This principle helps to ensure that patents are granted only for what is actually invented and claimed, rather than for broader concepts that are later asserted through the doctrine of equivalents.

file-wrapper continuation application | filia

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JumpySubsequentDolphin
11:17
@Dkk: i think a law student was pregnant and due to give birth a few days before finals and they refused to accomodate her
JumpySubsequentDolphin
11:17
accommodate*
11:17
@Mostlylegal: yeah and i was thinking fuck it just go party for three years but i got other options and need to start building, top law schools were worth that 3 year pause but i am not sure i can do that for asu and their outcomes
11:19
Also I just got diagnosed with ADHD is it stupid if I dont take the test again now that Im medicated?
Dkk
11:19
She offered to take it early? Should have given her that one. Remote I can understand saying no to but taking it early, yes.
babycat
11:20
big things coming for babycat. I own a resistance band now
concorde
11:20
@renard99: jones needs to take this advice and fight aspinall
11:21
is that what they are calling punk rock bands these days?
BulbasaurNoLikeCardio
11:21
@babycat: did you get a booboo or just trying to do more workouts at home?
11:21
@Mostlylegal: I jumped six points after beginning adhd meds. Might be worth it
Dkk
11:22
Just an hour and 38 minutes left before I can ask Kayle in LSAT Demon to marry me. I take these AMA's seriously.
11:22
@concorde: “I will retire Jon Jones without even fighting him” hardest thing anyone in the UFC ever said
m10
11:23
i spelled her fucking name wrong lmfao, Kaley. Lmfao.
BulbasaurNoLikeCardio
11:24
It was years ago but it was a lower card fight, dude didn't speak good english and they tried asking him his plan, he was like "punch him" they tried to get more info pushing it again and he said "punch him hard" and pointed at his forehead.... I don't remember the results of the fight but dude had a solid plan.
babycat
11:24
@BulbasaurNoLikeCardio: no booboo I’m just trying to increase flexibility a little. I feel like if u develop too much muscle on ur legs and don’t stretch they get tight
JumpySubsequentDolphin
11:26
my hips are so tight its acc miserable
BulbasaurNoLikeCardio
11:26
@babycat: got to keep those legs flexible so you don't pull anything, I need to get back into yoga to release and stretch out tension in my muscles. Stretching is where I fail the most with fitness
11:26
This song came out today and I think I legit have listened to it like 50
11:26
Times already
1a2b3c4d26z
11:26
Need to stretch more
1a2b3c4d26z
11:27
Run this morning felt like legs were made of goop
glovediedthisishismom
11:27
a secret home remedy for chapped lips is to lick them. your saliva will moisten the lips and relieve the chapping
1a2b3c4d26z
11:27
Sometimes I think I write like rorschach from watchmen
11:28
@glovediedthisishismom: just bite your lip,. gives good brain feel when peelin the dry skin
babycat
11:28
yeah it’s insane how much better hip flexor stretches can make you feel sometimes
11:28
Probably the most important long term mobility thing you can do
1a2b3c4d26z
11:28
Pigeon stretch GOAT
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