... unless you own PTSC shares...

http://www.cbp.gov/linkhandler/cgov/trade/legal/directives/2310-006a.ctt/2310-006a.pdf

Again, perhaps not the latest version but certainly succinct.
I wonder what happens if someone takes a personally owned infringing device on vacation before the ID and comes back into the country after the ID. How pervasive would the enforcement be?

DEPARTMENT OF THE TREASURY U.S. CUSTOMS SERVICE

(IMPORTER)

Sir/Madam:

This is to advise you that the following shipment is deemed excludable from entry intothe United States by Order of the U.S. International Trade Commission for violation of 337-TA-xxxxxxxx, an Exclusion Order:

Patent/Trademark/Copyright Registration Number: xxxxxxx
U.S. International Trade Commission Case No: 337-TA-xxxxxxx
Article Denied Entry: xxxxxxxx
Quantity: xxxxxxx
Vessel/Airline: xxxxxxxxx
Bill of Lading: xxxxxxxxxxxxx
Date of Denial of Entry: xx/xx/2013

You have 30 days from the date of this letter to export the subject merchandise from theUnited States. If the merchandise is not exported within 30 days, it will be disposed ofunder Customs supervision pursuant to 19 CFR § 12.39(b)(3) and (c)(5).

A copy of this notice is being furnished to the U.S. International Trade Commission.You are hereby notified that any future attempt to import such articles may result in thearticles being seized and forfeited.

Sincerely,

Area/Port Director

cc: U.S. International Trade Commission U.S. Customs, Office of Regulations & Rulings