Counsel registry

AddyHart

5 case appearances — 4 as plaintiff counsel · 1 as defendant counsel.

Generating firm summary with web-search grounding — usually 30-60s. Don’t leave this page.

Attorneys

Further reading

Most-litigated US patents: 12 patents that defined the patent troll era
If a demand letter lands on your desk citing one of these, you are not the first. The campaign playbook is on file. The defenses other defendants used are public record.
Markman v. Westview Instruments, Inc. (1996)
Claim construction is exclusively the court's job. The Markman hearing is the most consequential single ruling in nearly every patent case — and a defendant's best chance to end the litigation before trial.
Cost of Inter Partes Review (IPR): a 2026 breakdown
An IPR ends most cases when the prior art is real. The all-in cost is roughly a tenth of full litigation — but only if you stage it right.
Patent term and expiration
Patents don't last forever. They don't even reliably last 20 years. The expiration date that actually matters depends on the earliest filing date, the maintenance schedule, and any USPTO or FDA delays the patent owner can claim back.
Patent law glossary
Sixty-plus patent-law terms, defined in one or two sentences each, with a link to the deeper article. The universal landing pad when an article uses a term you don't know.