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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
upon demand from
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "upon demand from" is correct and usable in written English.
It can be used when indicating that something will be provided or done at the request of someone. Example: "The documents will be made available upon demand from the client."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
on application by
upon submissions from
upon retirement from
on application from
upon validation from
subject to approval from
upon authorization from
following a request from
upon consistency from
as requested by
upon encouragement from
at the request of
upon request
upon instruction from
upon application for
upon orders from
with the permission of
as stipulated by
upon applications for
by order of
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
To achieve controlled, local capillary lymphangiogenesis with protein engineering and determine its effects on fluid clearance, leukocyte trafficking, and wound healing, we developed a fibrin-binding variant of vascular endothelial growth factor C (FB-VEGF-C) that is slowly released upon demand from infiltrating cells.
Science
Worst hit would be the industrial cities, where orders depend upon demand from energy companies.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Japan's luxury goods producers in the past were able to depend upon demand both from the wealthy and from the much broader "middle class". But, in the past few years, the middle class has returned to its more traditional frugality.
News & Media
However, Resolution 1559 contains a second, less remarked-upon demand.
News & Media
"Upon a demand from Russia, which is responsible for completing the Bushehr nuclear power plant, fuel assemblies from the core of the reactor will be unloaded for a period of time to carry out tests and take technical measurements," Mr Soltanieh said, according to the semi-official Isna news agency.
News & Media
If the taxpayer does not pay any installment under this clause on or before the date prescribed for its payment, the whole of the unpaid tax shall be paid upon notice and demand from the Secretary.
Academia
Checking accounts that pay no interest and from which funds can be withdrawn upon demand.
Academia
From here, it is recruited to other tissues upon demand (D'Ambrosio et al., 2011).
Science
legislature to make abortion available upon demand.
News & Media
The rates vary based upon demand.
News & Media
*Projected Availability subject to change depending upon demand.
News & Media
Expert writing Tips
Best practice
Use "upon demand from" when you want to emphasize a formal or legal obligation to provide something when requested. It's suitable for contracts, official notices, and technical documentation.
Common error
Avoid using "upon demand from" in casual conversation or informal writing. Opt for simpler alternatives like "at the request of" or "when asked by" to maintain a more natural tone.
Source & Trust
87%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon demand from" functions as a prepositional phrase modifying a verb or noun, indicating the condition under which an action will be taken or something will be provided. It specifies that the action or provision is contingent on someone's request.
Frequent in
News & Media
33%
Science
33%
Wiki
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "upon demand from" is a prepositional phrase used to indicate that an action or provision is contingent on a specific request from someone. Ludwig AI confirms that it is grammatically correct, though relatively rare in usage. It is most suitable for formal contexts like legal documents or official communications. When a less formal tone is desired, alternatives such as "at the request of" or "when asked by" may be more appropriate.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
at the request of
Replaces "upon demand" with a more common phrasing using "request".
as requested by
Similar to "at the request of", but uses a past participle verb form.
per request from
Short and direct, suitable for informal or internal communications.
when requested by
Focuses on the timing of the action being contingent on a request.
following a request from
Specifies that an action occurs after receiving a request.
on application by
Suitable in contexts where a formal application or request is needed.
at the instance of
A more formal and less common way to express the same concept.
as stipulated by
Highlights that the demand is based on a pre-existing agreement.
if required by
Emphasizes the conditionality of the action based on someone's need.
by order of
Implies a formal or authoritative command is the source of the demand.
FAQs
How can I use "upon demand from" in a sentence?
You can use "upon demand from" to indicate that something will be provided or done when someone requests it. For example, "The documents will be made available "at the request of" the client upon demand from their legal representative".
What's a less formal alternative to "upon demand from"?
Alternatives include "at the request of", "as requested by", or "when asked by". The choice depends on the specific context and the desired level of formality.
Is "upon demand from" interchangeable with "on demand from"?
While similar, "upon demand from" is more formal and emphasizes a legal or contractual obligation. "On demand from" is less common and might sound slightly awkward. It's usually better to use "at the request of" instead.
In what situations is "upon demand from" most appropriate?
"Upon demand from" is most appropriate in formal settings such as legal documents, contracts, and official communications, where there is a clear expectation of compliance with a request. It implies a duty to act when asked.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.3/5
Expert rating
Real-world application tested