[buro9]

Are _any_ of the following true?

1. You worked on this in company time? (i.e. Github history shows you did)

2. Your company asked someone (inc you or your team) to make this? (i.e. you got inspiration directly from it)

3. You worked on this on company equipment? (i.e. work provided your primary machine and you used the tools the company provided in your spare time to build this)

If _any_ of those is true, then your employer likely has a claim over the IP.

If _none_ of this is true, then you should be fine but it also depends on your employer, the culture there, and whether this is perceived as being valuable to them... YMMV.

[finance_br0]

Thank you for the answer! None of this is true as far as I'm aware. I'm also sure my employer would actually be pretty supportive.

[buro9]

"as far as I'm aware", this is doing some heavy lifting.

You need to be sure :)

The above list of requirements is in essence what most of the UK and EU check for when doing checks of patent and IP law.

I am not a lawyer though, I'm in engineering... so of course, get your own confidence that this approach is good for you.

Most employers would be cool with extra-curricular things (many demand it on CVs!), but you never actually know until it happens.