Whilst the number of cases involving litigation has not grown during the lifetime of UCP 500, the introuduction of the ICC's Documentary Credit Dispute Resolution Expertise Rules in October 1997 has resulted in more than 60 cases being decided.

1. involve 是及物动词“涉及”，litigation （诉讼）为其宾语。为何要用过去分词呢？

involving litigation 叫现在分词短语，作定语，修饰cases，等于...cases which involve litigation。

cases involving litigation： 涉及诉讼的案件（即：需要打官司的案件）

若用过去分词，involved litigation 怎么理解？它与cases 是何关系？没法解释！

2. being decided 是动名词的被动式，more than 60 cases 为其逻辑主语。构成“动名词复合结构”， 作resulted in 的宾语。

result in doing ...；result in sb/sth doing...