Similarly, some Wall Street investment firms armed themselves with patents for financial products, even as they took positions in court cases opposing the practice.
【参考译文】无独有偶，一些华尔街投资公司也用多项金融产品专利来武装自己，即便与此同时在一些法庭案件中他们采取反对此类专利的立场。
【参考解析】
1. even as：正当 / 恰逢……之时（由于申请及利用专利不是朝夕之事，因此个人以为似应译为“与此同时”为宜，下文的“多个案件”也可说明主从句的动作都非短期行为）。其引导的是时间状从，不是倒装。
2. took positions in court cases opposing the practice
= took positions opposing the practice in count cases
【相关资料】本段文章看你已经问了不少问题，特拿来整体翻译如下，仅供参考：
Curbs on business-method claims would be a dramatic about-face, because it was the Federal Circuit itself that introduced such patents with its 1998 decision in the so-called State Street Bank case, approving a patent on a way of pooling mutual-fund assets. That ruling produced an explosion in business-method patent filings, initially by emerging Internet companies trying to stake out exclusive rights to specific types of online transactions. Later, more established companies raced to add such patents to their files, if only as a defensive move against rivals that might beat them to the punch. In 2005, IBM noted in a court filing that it had been issued more than 300 business-method patents, despite the fact that it questioned the legal basis for granting them. Similarly, some Wall Street investment firms armed themselves with patents for financial products, even as they took positions in court cases opposing the practice. 
对商业方法诉求的限制极富戏剧性的转变，因为（当初）引入这种专利的始作俑者正是联邦巡回法院自己。那是1998年，在所谓的美国道富银行的案件中，联邦巡回法院判决批准了筹集共同基金资产的方法具有专利权。这一裁决使得商业方法专利文件以几何数级增加，起初只是一些新兴的网络公司对于某些特定类型的在线交易系统试图争取独家专有权。后来，越来越多的老牌公司也竞相将此类专利入卷归档，至少作为防御措施，以防竞争对手抢占先机。2005年，IBM公司在一份法院案卷中发现自己被授予了超过300多项商业方法专利，尽管连它自己都质疑这种专利授权的法律基础。无独有偶，一些华尔街投资公司也用多项金融产品专利来武装自己，即便与此同时在一些法庭案件中他们采取反对此类专利的立场。