Clarifying what would be outside the scope of employment, but related to the Company's business

Are there any additional resources that could be linked to in order to help understand what is "within the scope of your employment" versus what is "relates to the Company's business" versus what is not related to the company business at all? It seems like understanding those phrases (I'm not a lawyer) are very important to understand what BEIPA is all about.

In the FAQ in the `README.md` a clarification is given about patents and seems to imply that unless the employer has specific patent objectives (and thus falling under the scope of employment), that under BEIPA the employee could in their spare time file patents for things they are doing within the scope of their employment (say some code they were asked to write) but that action of filing patents isn't within scope (the company didn't ask them to file patents) so the employee would own the patents? Is this an incorrect interpretation of how 'scope of employment' works?