10 Steps to Consider Before Filing a Patent Infringement Lawsuit
Identify your business goalsAre you seeking money (lost profits, reasonable royalty)? An injunction (court order stopping infringer from infringing). Do you want to send a message to your competitors? Do you want to negotiate a license? What can you accomplish before litigation that you cannot do after litigation starts?
Get Analysis of Infringement Issues and Invalidity IssuesMust be in writing.
Determine strengyhs and weaknesses of your patent.
Should use independent law firm (not one taking case) for unbiased assessment.
Does defendant have patents on the product? What are the weaknesses and strengths of those patents?
Determine competitive position of inventionCan defendant easily design around (or redesign) your patent?
What are commercial advantages of the invention? (sales, cost of manufacture, potential for future sales).
What are the products/services that compete with the invention?
Does the invention make money "by itself"? Or is the invention more successful due to marketing, lever from company position, etc.?
Compare ProductsIf practicing the invention, are you losing or gaining market share?
Do consumers like your product/service?
How does your product compare with other products in marketplace?
How does your product compare with defendant's product?
Products marked with patent number?
What are your lost profits
What is a reasonable royalty?
Insurance coverage? Advertising injury?
Litigation CostsEstimate legal fees, costs, experts.
Travel (where will you sue?).
What is the extent of discovery to be produced on your side?
What kind of discovery do you need from defendant?
What is the litigation personality of the defendant? ("scorched earth", "settle promptly", fight some, settle some?).
Size Up the DefendantGoogle is not enough.
Dun & Bradstreet
Previous patent litigation.
How important is the product to defendant?
Who are the potential witnesses for the defendant? Did they publish anything?
Is the lawsuit more important for you or the defendant?
If you win, will you end up closing down the company? Will they go BK?
Who are their usual litigation attorneys?
Review Your EvidenceGather all documents. Anticipate documents to be requested by defendant in discovery. (Product brochures, advertisements, lab notebooks, invention disclosures, patentability searches, prosecution history).
Review patent prosecution attorney's files.
Interview key witnesses. (Inventor, technicians)
Interview likely witnesses.
What trade secrets are likely to be revealed in litigation? Are relevant documents marked as confidential? Is infomration kept secure to maintain trade secret protection?
Any best mode problems?
Retain Expert WitnessesAnalyze credibility, previous work, publications,
Ask expert about defendants' likely experts.
Make a LItigation PlanBudget for litigation costs.
Plan discovery, motions, summary judgment, anticipate defendant's likely motions.
Identify which aspects of your case pose non-routine issues (e.g., software, medical procedures, divided infringement, inequitable conduct).