Очень смущает вот эта часть предлож "for the purposes of suing and being sued ". Я так понимаю это предлож: Чьи права будут нарушены, если фирма объявит себя отдельной единицей - а вот дальше, не пойму к чему это sue. как то не вяжется- объявит себя отдельной единицей, чтобы привлекать к суду и быть привлеченными к суду...

Вот контекст:But charters enacted by state legislatures literally ceased to exist in the mid-nineteenth century. The actual procedure for creating a corporation consists of filing a registration document with a state official (like recording the use of a fictitious business name), and the state’s role is purely formal and automatic. To call incorporation a “privilege” implies that individuals have no right to create a corporation. But why is government permission needed? Who would be wronged if businesses adopted corporate features by contract? Whose rights would be violated if a firm declared itself to be a unit for the purposes of suing and being sued or holding and conveying title to property, or that it would continue in existence despite the death or withdrawal of its officers or investors, or that its shares are freely transferable, or if it asserted limited liability for its debt obligations? (Liability for torts is a separate issue; see Hessen 1979, pp. 18–21.) If potential creditors find any of these features objectionable, they can negotiate to exclude or modify them.