Oxford University Press is having its Summer Sale of law books -- 134 titles are on offer, at very generous discounts. One of these books is of interest to patent litigators, US ones at any rate. It's Patent Appeals: the Elements of Effective Advocacy in the Federal Circuit by Mark Simon Davies, published a little over two years ago and noted here on PatLit. When launched, its UK price was £60 but you can by it from the publisher now for just £15.
Please note, this offer price only applies to individual customers when ordering direct from Oxford University Press, while stock lasts. No further discounts will apply.