This is a quick and informative read detailing what a science postgraduate can expect from a change of career into patents law and intellectual property.
It seems slightly pessimistic, and the author admits having only spent two years working in a law firm before realising the career wasn't for him, but it's clear that every experience will be somewhat different, so perhaps that's why. In any case, he succeeds in giving a broad-strokes overview of what a trainee patents attorney (or technical specialist) can expect.
It's very US-centric, and slightly dated - this edition was published in 2012 and as the author mentioned in an addendum, these things can change quickly. Even so, it's a good place to start and gave me a lot of ideas.
I particularly liked the sections on CVs, cover letters and applications. Additionally, the final chapter contains an overview of other careers a scientist might consider if they're thinking about work outside academia. Again, it's focused on the US, but I think it could be useful to most current graduate students and early career researchers.