Counsel registry

Hill Wallack

3 case appearances — 0 as plaintiff counsel · 3 as defendant counsel.

Attorneys

Further reading

District court vs. PTAB: where to fight a patent challenge
Every defendant who actually fights a patent ends up choosing — sometimes implicitly — between district court invalidity, PTAB IPR, or both in parallel. The trade-offs are not symmetric; the choice often determines the case.
What to do if you get a patent demand letter
A patent demand letter is a request for money, not a court order. The plaintiff's leverage is your fear; preparation removes it.
Bilski v. Kappos (2010)
Machine-or-transformation isn't the only § 101 test, business-method patents survived as a category, and the specific Bilski hedging method was unpatentable. The trio of Bilski, Mayo, and Alice gave defendants the modern § 101 motion.
The America Invents Act (2011)
The AIA was the structural reform that gave defendants modern tools — IPR, broader prior art, joinder limits. The unfinished work is cost: AIA didn't make defense free, it made defense possible.
Patent trolls in 2025: the year in numbers
2025 was a banner year for patent trolls — and not by accident. Filings surged while the defendant's cheapest weapon, the PTAB, was quietly taken off the table. Here's what the reporting shows, and why the two are connected.