Journal of Literary Theory was created in 2007.

The Lambda Literary Award was first presented in 1988 for celebration and exploration of LGBT people. (lesbian, gay, bisexual, and transgender)

Clara Fraser has written:

'Woman as Leader'

'Revolution, she wrote' -- subject(s): Women and communism, Feminist theory, Socialism, Lesbian feminist theory, Lesbian feminism

Yes, names of literary theories such as Marxism and Feminism are typically capitalized when used in literary criticism.

A philosophical movement and theory of literary criticism.