Pattern weleded refers to multi-layered laminated steels of diferent compositions such that the resulted surface displays a specific pattern.
San-mai is laminated but not pattern welded (as it involves only three steels) for example.
Japanese Katanas have laminated but not pattern welded blades despite displaying even the characteristic patterns (Hada), as they do not empoy diferent steels with different compositions.
So calling any laminate "Damascus" whether wild or domesticated
is a little over-stretching in my oppinion.