CLUB ANSWER
Can I use one downloaded pattern for multiple clients or products?
Yes. One licensed download may be incorporated into multiple finished projects and client products, provided the original source is not transferred as a reusable asset.
End products are allowed
Use the pattern in packaging, backgrounds, products, campaigns and client compositions without buying the same file again.
Source-file transfer is different
A client may receive the completed design but not an unrestricted copy of the standalone Club master for unrelated future work.
Document delivery
Record the asset and license in the project handoff. Explain that the underlying pattern remains non-exclusive.