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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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has been valid for

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "has been valid for" is correct and usable in written English.
It can be used to indicate the duration for which something has been accepted or recognized as true or applicable. Example: "The warranty has been valid for two years since the date of purchase."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

This trend has been valid for over 40 years and is likely to continue until around 2020, by which time we will be able to place one bit of information on a single atom.

News & Media

Forbes

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

Under the bill, such immigrants could have obtained visas that would have been valid for four years and could have been renewed repeatedly.

News & Media

The New York Times

Later, contending that the placard should have been valid for parking all over the city, Sergeant Heyliger filed an appeal to the parking board.

News & Media

The New York Times

That such a state of affairs still exists when such criticisms have been valid for decades is a matter of national shame.

News & Media

Independent

The first officer was 31 years old and held a C-certificate which limited him to being first officer on the Dash 7. The certificate was issued on 5 January 1987 and had been valid for the Dash 7 since 23 February 1988.

There was limited evidence that the proportional hazards assumption might not have been valid for the association between proton pump inhibitor exposure and mortality outcomes (Wald test, P=0.05).

Therefore, the assumptions on determinants that formed the basis of intervention development might not have been valid for the adolescents in our trial.

However, for low grade tumours and those of poorly specified anatomical location, incidence seemed to decrease in 1992-2008 (figs 3 and 4), so this assumption might not have been valid for these endpoints.

For the data analyzed, [RT] is 7 μM (i.e. yielding up to 21 μM of ATP binding sites if h-sites exist) and the minimum [XT] is 46 μM, so the approximation [X] = [XT] would not have been valid for this lowest [ATP] data point.

"Kodak" and "Coca-Cola" have been valid trademarks for longer than 75 years and show no signs of running out.

News & Media

The New York Times

However, these statistical comparisons may not have been valid if the number of isolates for both studies were similar.

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Expert writing Tips

Best practice

When using "has been valid for", ensure the subject is clearly defined and the duration is specific. For instance, "The driver's license has been valid for five years."

Common error

Avoid using "has been valid since" when you mean "has been valid for". "Since" indicates a starting point, while "for" specifies a duration.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "has been valid for" functions as a stative verb phrase indicating the duration of a condition or state of legitimacy. As Ludwig AI points out, it signifies that something has been in a state of validity for a specified period.

Expression frequency: Uncommon

Frequent in

Science

54%

News & Media

39%

Wiki

7%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "has been valid for" serves to define the period a condition or agreement has been in force. It is grammatically sound, as Ludwig AI confirms, and while not exceedingly common, is frequently found in scientific and news-related contexts. When writing, remember to differentiate its use from "has been valid since", keeping "for" to indicate duration and "since" to specify a starting point. Alternative phrases such as "has remained valid for" and "has been in effect for" can provide variety while maintaining clarity.

FAQs

What is an alternative to "has been valid for"?

You can use phrases like "has been in effect for", "has remained valid for", or "has been applicable for" depending on the context.

How do I use "has been valid for" in a sentence?

Use "has been valid for" to indicate the duration for which something has been accepted or recognized. For example, "The warranty has been valid for two years."

What's the difference between "has been valid for" and "is valid for"?

"Has been valid for" indicates a duration in the past leading up to the present, while "is valid for" indicates a current validity period.

Can I use "has been valid since" instead of "has been valid for"?

No, "has been valid since" and "has been valid for" have different meanings. "Since" indicates a starting point, whereas "for" indicates a duration. Use "since" with a specific date and "for" with a length of time.

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Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: