German contracts/Deutsche Verträge

Typical German contracts that I get to translate will start off by naming the parties and in brackets defining a short name, e.g. im folgenden: "Käufer" (hereinafter referred to as the Seller). That's similar to the English-language approach. I usually remove the inverted commas. It is not necessary to capitalize seller, at least in England, but my clients appear to expect it. After this, the contracts usually never use the term Käufer or Verkäufer again! They will write Vertragspartei, or name the company, but having defined the terms they drop them. I have sometimes seen a party referred to in four different ways in one short contract. Or having defined die Produkte (the Products), the writer thereafter refers to die Vertragsprodukte (the contract products - presumably this can't be capitalized if it hasn't been defined). As a result, a translator's note usually needs to be made. One doesn't want to use several different terms in English, even if it is easy to do so (which it sometimes isn't), but nor does one want to misinterpret. Incidentally, I would love to use the company name instead of Seller, especially where the defined term is hard to translate, but this is usually rejected, possibly because the customer wants a text that can be used in future with a variety of parties (in which case, I need to know that, so I can ensure the translation is not gender-biased, for example), possibly just out of a feeling that this is too great a departure from the German. Anyway, it's clear why the defined terms are not used consistently - it's because the drafter grabbed bits from a variety…