Registered patent agent
Keith L Constantine
Address
194 Argyle Road
Langhorne, PA, 19047
US
Phone
Registered as
Registered patent agent
Other patent attorneys in Langhorne, Pennsylvania
- Steven D BoydUSPTO Reg. 31000
- Leslie A CohenUSPTO Reg. 63859
- Harvey David FriedUSPTO Reg. 28298
- Maurice E GrudzaUSPTO Reg. 51757
- Eric W. RotteveelUSPTO Reg. 80443
- George B TereschukGeorge B. Tereschuk, Esq.
- Hal B. WoodrowHal B. Woodrow
Frequently asked
Frequently asked about Keith L Constantine
Is Keith L Constantine a registered patent attorney?
Keith L Constantine is a registered patent agent (USPTO Registration Number 75458). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Keith L Constantine located?
Keith L Constantine's office is in Langhorne, Pennsylvania (19047).
How do I contact Keith L Constantine?
Keith L Constantine's office phone (per the USPTO public roster) is 215-715-9560. Verify availability and intake details directly with the firm before sending privileged materials.
Should I prepare anything before contacting a patent attorney?
Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.
Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.