OPCA meaning in General ?

Pseudolaw consists of statements, beliefs, or practices that are claimed to be based on accepted law or legal doctrine, but which deviate significantly from most conventional understandings of law and jurisprudence, or which originate from non-existent statutes or legal principles the advocate or adherent incorrectly believes exist. Donald Netolitzky defined it as "a collection of legal-sounding but false rules that purport to be law", a definition that distinguishes pseudolaw from arguments that fail to conform to existing laws such as novel arguments or a ignorance of precedent in case law. The features are distinct and conserved. It is sometimes referred to as "legalistic gibberish". The more extreme examples have been classified as paper terrorism.

Followers of such ideologies can cause problems for courts and government administrators by filing unusual applications that are difficult to process. Courts in Canada refer to such arguments as organized pseudolegal commercial arguments (OPCA), and have called them frivolous and vexatious. There is no recorded instance of such tactics being upheld in a court of law. Pseudolaw belief can resemble mental illness.

Common among pseudolegal beliefs is a belief that one is partially or fully sovereign from the country in which they live, and a belief that no laws, or only certain laws, apply to the believer. Groups espousing such pseudolegal beliefs include freemen on the land and the sovereign citizen movement. Some believe that their state itself is illegitimate, such as Reichsbürgerbewegung.

Also under the umbrella of pseudolegal arguments are conspiracy theorists who believe there is a secret parallel legal system that one can access through certain means, like using a secret phrase or by placing stamps on the right place on documents. For example, the redemption movement believes that a secret fund is created for everyone at birth by the government, and that a procedure exists to "redeem" or reclaim money from this fund. See tax protester conspiracy arguments for a discussion of these beliefs related to tax law. Many of these revolve around the "legal name fraud" movement, which believes that birth certificates give the state legal ownership of a personal name and refusing to use this name therefore removes oneself from a court's jurisdiction. Various groups advocate that one can avoid this state ownership by distinguishing between capitalized and non-capitalized versions of one's name, or by adding punctuation to one's name. See strawman theory (also known as the capital letters argument) for more information.

During the COVID-19 pandemic, business owners and individuals cited pseudolaw, such as obsolete clauses in Magna Carta, to escape coronavirus restrictions.