The phrase "a pattern that required" is correct and usable in written English.
You can use it when discussing a specific pattern that necessitates certain actions or conditions.
Example: "The research revealed a pattern that required further investigation to understand its implications."
Alternatives: "a pattern that demanded" or "a pattern that needed".
This study tests these hypotheses and indicates that nonlocal vessels, particularly complicated stamped ones, were deposited almost exclusively in mortuary contexts, a pattern that requires new explanations for the role of pottery in social interactions.
We're settling into a pattern that requires an awful lot of patience — over and above the nearly two weeks I've waited to receive the heater I bought on Amazon.
Assuming that living great apes demonstrate the ancestral weaning pattern, modern humans display a derived pattern that requires explanation, particularly since earlier weaning may result in significant hazards for a child.
Furthermore, the superpixels produced by pixel binning in color image sensors form a Bayer pattern that requires the additional step of demosaicking to recover the full color low resolution image.
Peter Marler [4] characterized vocal learning as "the development of a vocal pattern that requires intact hearing".
A second pattern that requires explanation is why X and autosomes are so different.
This is like a one-person performance by three people". Musical director Brad Ellis has distributed the harmonic lines in an intricate pattern that requires each singer to switch often from top to middle to bottom, Hampton said.
What almost all explanations have in common is the assumption that Zipf's law is a robust empirical pattern that requires explanation.
Despite evolutionary stability, the intestinal microbiota develops in individual animals in a characteristic successional pattern that requires substantial adaptation by the host during early life.
As noted above, possible exceptions to this pattern that require further investigation are Ferecetotherium, which is likely a physeteroid and possibly Oligocene in age, and Notocetus marplesi, which is Oligocene in age and is possibly a squalodelphinid.
