BioAgent: First, thanks to MD for noting the visa requirement for sitting for the USPTO exam that I (embarrassed) did not check for before I responded to your post.
Mea maxima culpa. But my apology is not the only reason I type. You make some interesting (at least for me) observations wholly unrelated to patent law. The differences between the US and UK that you note or allude to are, I think, cultural, “institutional”, perhaps formalistic, or all three.
Before I became a patent attorney, I had the opportunity to work in DE as a bench chemist in R&D for a huge chemical company in FfM. DE is not the UK (Lord Churchill forgive me for mentioning both in the same sentence!). But at first blush, I see some similarities in the employee development - “ausbildung” if you will - systems in DE and UK that are, IMO, markedly different from those here in the US, to the extent that such systems even exist here.
In the US, employment contracts are the exception, not the rule (and almost unheard of in the legal profession). In our ultra-capitalistic society one is (unrealistically?) expected to hit the ground running out of the U. Apprenticeship formally exists only in the manual trades. Although IMO learning patent drafting is very much an apprenticeship endeavor. IMO, the craft of patent drafting cannot be taught, only acquired. But law firms here don’t acknowledge this with formal “apprenticeship” programs, contrary to what from your post appears to be the case in the UK. .
To be sure, positions in industry in the US are oft denominated “level-I”, level-II”, “level III”, etc. But except for rare circumstances, the numerals change only with longevity and/or luck. Only vaguely related to increased competency. The only exceptions I know of are in sales. Positions denominated “sales trainee” - i.e. you earn subsistence wage- whilst you lean to pick pockets -are not uncommon

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