PATENTS RELATED TO LEUKOCYTES

Professor Demchick's Patent Services

Paul H. Demchick, United States Registered Patent Agent
(United States Patent and Trademark Office Registration 52,808)

PATENTS RELATED TO LEUKOCYTES

Although Dr. Demchick also represents patent seekers with non-biological inventions, his doctorate is in biology. Biology has been the primary focus of his research and teaching. He especially loves dealing with patent searches and applications for involving biology.

Dr. Demchick is a scientist with a quarter of a century of research experience in academic, industrial and governmental settings.
If you are considering patent protection for an invention, Dr. Demchick will be glad to discuss the matter with you. There is no charge for an initial discussion.
The following sampling is to give you some sense of the types of leukocytes related inventions which have received United States patent protection. The patent list is not exhaustive and is certainly not a substitute for a proper patent search . It should be noted that only U.S. Patents are included.
It should be noted that spelling, form and typographical errors in the original patents are preserved here.

Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,135,477)
Modulators of leukocyte activation, compositions and methods of use (United States Patent 7,122,332)
Multicyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,115,768)
Pyroglutamic acid derivatives and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,101,855)
Flow cytometer for classifying leukocytes and method for determining detection angle range of the same (United States Patent 7,092,078)
Leukocyte stimulating peptides (United States Patent 7,074,891)
Modulators of leukocyte activation, Hck compositions and methods of use (United States Patent 7,067,266)
Synthetic peptides that inhibit leukocyte superoxide anion production and/or attract leukocytes (United States Patent 7,049,396)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4. (United States Patent 7,049,306)
Modulators of leukocyte activation, compositions and methods of use (United States Patent 7,045,308)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,030,114)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,026,328)
Family of immunoregulators designated leukocyte immunoglobulin-like receptors (LIR) (United States Patent 7,014,853)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,008,949)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,005,433)
Full-gene sequence of the donkey leukocyte vaccine strain of the equine infectious anemia virus and their application (United States Patent 6,987,020)
Filter for selectively removing leukocytes (United States Patent 6,977,044)
Compound for inhibiting the influx of polymorphonuclear leukocytes (PMNS) in a tissue, its selection, pharmaceutical compositions and use (United States Patent 6,960,565)
Methods for the isolation of nucleic acids and for quantitative DNA extraction and detection for leukocyte evaluation in blood products (United States Patent 6,958,392)
Beta-amino acid derivatives-inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,953,802)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,949,570)
Modulators of leukocyte activation, BIC compositions and methods of use (United States Patent 6,929,923)
Method of using monoclonal antibodies against leukocyte adhesion receptor .beta.-chain (United States Patent 6,921,533)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,911,439)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,903,088)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,900,179)
Method for classifying and counting leukocytes (United States Patent 6,900,023)
Human leukocyte 12-lipoxygenase and its role in the pathogenesis of disease states (United States Patent 6,893,829)
Small molecules for inhibition of function and drug delivery to leukocytes (United States Patent 6,881,747)
Lytic reagent composition for leukocyte differential analysis (United States Patent 6,869,798)
Detection of surface-associated human leukocyte elastase (United States Patent 6,858,400)
Alpha amino acid derivatives--inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,803,370)
3-(heteroaryl) alanine derivatives-inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,794,506)
Leukocyte filter construction (United States Patent 6,767,466)
Process for continuous purification and concentration of leukocytes from blood (United States Patent 6,743,624)
Method for counting leukocytes and leukocyte counter (United States Patent 6,743,591)
Methods and reagents for cyanide-free determination of hemoglobin and leukocytes in whole blood (United States Patent 6,740,527)
Synthetic peptides that inhibit leukocyte superoxide anion production and/or attract leukocytes (United States Patent 6,713,605)
Alpha-subunit of the Mac-1 leukocyte adhesion receptor (United States Patent 6,683,158)
Leukocyte derived growth factor 2 (United States Patent 6,673,893)
Diagnosis of pathogen infections through analysis of nitrite production by antigen stimulated leukocytes (United States Patent 6,673,566)
Proteins and peptides derived from protein ESM-1 and their uses in the treatment and diagnosis of diseases linked to leukocyte migration (United States Patent 6,670,328)
METHOD FOR IDENTIFYING INDIVIDUALS SUFFERING FROM A CELLULAR ABNORMALITY SOME OF WHOSE ABNORMAL CELLS PRESENT COMPLEXES OF HUMAN LEUKOCYTE ANTIGEN TYROSINASE DERIVED PEPTIDES, AND METHODS FOR TREATING SAID INDIVIDUALS (United States Patent 6,669,946)
Method for counting leukocytes and apparatus for counting leukocytes (United States Patent 6,667,177)
PROCEDURE FOR THE ANALYSIS OF THE FUNCTIONAL ACTIVATION OF LEUKOCYTES, PLATELETS AND OTHER CELLS, INDUCED IN VIVO OR IN VITRO, BASED ON THE STABILIZATION OF CYTOPLASMIC MEMBRANE PROTEINS AND ITS DETECTION USING QUANTITATIVE CYTOMETRIC METHODS IN THE ABSENCE OF ADDITIONAL SAMPLE MANIPULATION (United States Patent 6,667,149)
Leukocyte depletion filter media, filter produced therefrom, method of making same and method of using same (United States Patent 6,645,388)
Leukocyte filter (United States Patent 6,629,613)
Microbial production of mature human leukocyte interferons (United States Patent 6,610,830)
Process for producing leukocyte-removing material and hydrophilized polyolefins (United States Patent 6,602,812)
Method for quantitating leukocyte count in whole blood sample (United States Patent 6,599,713)
Benzyl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,586,602)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,583,139)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,559,127)
Fused ring heteroaryl and heterocyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,545,003)
Composition and device for detecting leukocytes in urine (United States Patent 6,528,652)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,525,026)
Monoclonal antibody which inhibits transendothelial migration of human mononuclear leukocytes (United States Patent 6,515,111)
Composition and device for detecting leukocytes in urine (United States Patent 6,503,725)
Method of regulating expression of adhesion molecules on circulating leukocytes (United States Patent 6,500,810)
Substituted phenylalanine type compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,492,421)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,492,372)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,489,300)
Methods for inhibiting angiogenesis with leukocyte adhesion inhibitor-1 (LAI-1) polypeptides (United States Patent 6,485,719)
Microbial production of mature human leukocyte interferons (United States Patent 6,482,613)
Antibodies that specifically bind DNAX leukocyte associated immunoglobulin-like receptor (United States Patent 6,479,638)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,479,492)
Method and apparatus for automated rolling leukocyte velocity measurement in vivo (United States Patent 6,473,698)
Multicyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,465,513)
Method for measuring amount of active oxygen produced by leukocytes and oxidative stress (United States Patent 6,451,608)
Family of immunoregulators designated leukocyte immunoglobulin-like receptor (LIR) (United States Patent 6,448,035)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,436,904)
Compositions of highly-purified natural mixtures of type I Interferon derived from leukocytes and methods (United States Patent 6,433,144)
Dipeptide and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,423,688)
Process for purifying human leukocyte interferon (United States Patent 6,410,697)
Pyroglutamic acid derivatives and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,407,066)
Method for blocking endothelial cell-leukocyte attachment by inhibiting expression of adhesion molecules on the vascular endothelium for therapeutic applications (United States Patent 6,395,772)
Method of inhibiting leukocyte trafficking by anti-CCR2 amino-terminal domain antibodies (United States Patent 6,395,497)
Leukocyte homing modulation (United States Patent 6,387,884)
Family of immunoregulators designated leukocyte immunoglobulin-like receptors (LIR) (United States Patent 6,384,203)
Use of anti-CD45 leukocyte antigen antibodies for immunomodulation (United States Patent 6,379,668)
Benzyl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,362,341)
Hematological reference control composition containing leukocyte analogs, methods of making, and uses thereof (United States Patent 6,362,003)
On line blood processing system for obtaining for storage a blood suspension having a reduced residual leukocyte population (United States Patent 6,361,692)
Leukocyte-removing filter material (United States Patent 6,352,642)
Compositions of highly-purified natural mixtures of type I interferon derived from leukocytes and methods (United States Patent 6,350,589)
Composition and device for detecting leukocytes in urine (United States Patent 6,348,324)
Leukocyte reduction filtration media (United States Patent 6,337,026)
4-amino-phenylalanine type compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,291,453)
Method of identifying individuals suffering from a cellular abnormality some of whose abnormal cells present complexes of human leukocyte antigen/tyrosinase derived peptides, and methods for treating said individuals (United States Patent 6,284,476)
Leukocyte eliminating filter and method for manufacturing the same (United States Patent 6,251,276)
Method and apparatus for differentiating and enumerating leukocytes (United States Patent 6,232,125)
Viral vectors to inhibit leukocyte infiltration or cartilage degradation of joints (United States Patent 6,228,356)
Composition and method for differentiation of basophil and eosinophil subpopulations of leukocytes in blood (United States Patent 6,210,969)
Identification of canine leukocyte adhesion deficiency in dogs (United States Patent 6,210,897)
Efficient process for the preparation of [S-(R,S)]-N-[1,3-benzodioxol-5-yl)butyl]-3,3-diethyl-2[4-[4-methyl-1-piper azinyl)carbonyl]phenoxy]-4-oxo-1-azetidine carboxamide, a human leukocyte elastase inhibitor (United States Patent 6,194,569)
Human leukocyte 12-lipoxygenase and its role in the pathogenesis of disease states (United States Patent 6,191,169)
Diagnosis of disease state using MRNA profiles in peripheral leukocytes (United States Patent 6,190,857)
Monoclonal antibodies against leukocyte adhesion receptor .beta.-chain, methods of producing these antibodies and use therefor (United States Patent 6,187,308)
Leukocyte-specific protein and gene, and methods of use thereof (United States Patent 6,183,988)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,135,477)
Modulators of leukocyte activation, compositions and methods of use (United States Patent 7,122,332)
Multicyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,115,768)
Pyroglutamic acid derivatives and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,101,855)
Flow cytometer for classifying leukocytes and method for determining detection angle range of the same (United States Patent 7,092,078)
Leukocyte stimulating peptides (United States Patent 7,074,891)
Modulators of leukocyte activation, Hck compositions and methods of use (United States Patent 7,067,266)
Synthetic peptides that inhibit leukocyte superoxide anion production and/or attract leukocytes (United States Patent 7,049,396)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4. (United States Patent 7,049,306)
Modulators of leukocyte activation, compositions and methods of use (United States Patent 7,045,308)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,030,114)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,026,328)
Family of immunoregulators designated leukocyte immunoglobulin-like receptors (LIR) (United States Patent 7,014,853)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,008,949)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 7,005,433)
Full-gene sequence of the donkey leukocyte vaccine strain of the equine infectious anemia virus and their application (United States Patent 6,987,020)
Filter for selectively removing leukocytes (United States Patent 6,977,044)
Compound for inhibiting the influx of polymorphonuclear leukocytes (PMNS) in a tissue, its selection, pharmaceutical compositions and use (United States Patent 6,960,565)
Methods for the isolation of nucleic acids and for quantitative DNA extraction and detection for leukocyte evaluation in blood products (United States Patent 6,958,392)
Beta-amino acid derivatives-inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,953,802)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,949,570)
Modulators of leukocyte activation, BIC compositions and methods of use (United States Patent 6,929,923)
Method of using monoclonal antibodies against leukocyte adhesion receptor .beta.-chain (United States Patent 6,921,533)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,911,439)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,903,088)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,900,179)
Method for classifying and counting leukocytes (United States Patent 6,900,023)
Human leukocyte 12-lipoxygenase and its role in the pathogenesis of disease states (United States Patent 6,893,829)
Small molecules for inhibition of function and drug delivery to leukocytes (United States Patent 6,881,747)
Lytic reagent composition for leukocyte differential analysis (United States Patent 6,869,798)
Detection of surface-associated human leukocyte elastase (United States Patent 6,858,400)
Alpha amino acid derivatives--inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,803,370)
3-(heteroaryl) alanine derivatives-inhibitors of leukocyte adhesion mediated by VLA-4 (United States Patent 6,794,506)
Leukocyte filter construction (United States Patent 6,767,466)
Process for continuous purification and concentration of leukocytes from blood (United States Patent 6,743,624)
Method for counting leukocytes and leukocyte counter (United States Patent 6,743,591)
Methods and reagents for cyanide-free determination of hemoglobin and leukocytes in whole blood (United States Patent 6,740,527)
Synthetic peptides that inhibit leukocyte superoxide anion production and/or attract leukocytes (United States Patent 6,713,605)
Alpha-subunit of the Mac-1 leukocyte adhesion receptor (United States Patent 6,683,158)
Leukocyte derived growth factor 2 (United States Patent 6,673,893)
Diagnosis of pathogen infections through analysis of nitrite production by antigen stimulated leukocytes (United States Patent 6,673,566)
Proteins and peptides derived from protein ESM-1 and their uses in the treatment and diagnosis of diseases linked to leukocyte migration (United States Patent 6,670,328)
METHOD FOR IDENTIFYING INDIVIDUALS SUFFERING FROM A CELLULAR ABNORMALITY SOME OF WHOSE ABNORMAL CELLS PRESENT COMPLEXES OF HUMAN LEUKOCYTE ANTIGEN TYROSINASE DERIVED PEPTIDES, AND METHODS FOR TREATING SAID INDIVIDUALS (United States Patent 6,669,946)
Method for counting leukocytes and apparatus for counting leukocytes (United States Patent 6,667,177)
PROCEDURE FOR THE ANALYSIS OF THE FUNCTIONAL ACTIVATION OF LEUKOCYTES, PLATELETS AND OTHER CELLS, INDUCED IN VIVO OR IN VITRO, BASED ON THE STABILIZATION OF CYTOPLASMIC MEMBRANE PROTEINS AND ITS DETECTION USING QUANTITATIVE CYTOMETRIC METHODS IN THE ABSENCE OF ADDITIONAL SAMPLE MANIPULATION (United States Patent 6,667,149)
Leukocyte depletion filter media, filter produced therefrom, method of making same and method of using same (United States Patent 6,645,388)
Leukocyte filter (United States Patent 6,629,613)
Microbial production of mature human leukocyte interferons (United States Patent 6,610,830)
Process for producing leukocyte-removing material and hydrophilized polyolefins (United States Patent 6,602,812)
Method for quantitating leukocyte count in whole blood sample (United States Patent 6,599,713)
Benzyl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,586,602)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,583,139)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,559,127)
Fused ring heteroaryl and heterocyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,545,003)
Composition and device for detecting leukocytes in urine (United States Patent 6,528,652)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,525,026)
Monoclonal antibody which inhibits transendothelial migration of human mononuclear leukocytes (United States Patent 6,515,111)
Composition and device for detecting leukocytes in urine (United States Patent 6,503,725)
Method of regulating expression of adhesion molecules on circulating leukocytes (United States Patent 6,500,810)
Substituted phenylalanine type compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,492,421)
Heteroaryl, heterocyclic and aryl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,492,372)
Carbamyloxy compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,489,300)
Methods for inhibiting angiogenesis with leukocyte adhesion inhibitor-1 (LAI-1) polypeptides (United States Patent 6,485,719)
Microbial production of mature human leukocyte interferons (United States Patent 6,482,613)
Antibodies that specifically bind DNAX leukocyte associated immunoglobulin-like receptor (United States Patent 6,479,638)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,479,492)
Method and apparatus for automated rolling leukocyte velocity measurement in vivo (United States Patent 6,473,698)
Multicyclic compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,465,513)
Method for measuring amount of active oxygen produced by leukocytes and oxidative stress (United States Patent 6,451,608)
Family of immunoregulators designated leukocyte immunoglobulin-like receptor (LIR) (United States Patent 6,448,035)
Compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,436,904)
Compositions of highly-purified natural mixtures of type I Interferon derived from leukocytes and methods (United States Patent 6,433,144)
Dipeptide and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,423,688)
Process for purifying human leukocyte interferon (United States Patent 6,410,697)
Pyroglutamic acid derivatives and related compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,407,066)
Method for blocking endothelial cell-leukocyte attachment by inhibiting expression of adhesion molecules on the vascular endothelium for therapeutic applications (United States Patent 6,395,772)
Method of inhibiting leukocyte trafficking by anti-CCR2 amino-terminal domain antibodies (United States Patent 6,395,497)
Leukocyte homing modulation (United States Patent 6,387,884)
Family of immunoregulators designated leukocyte immunoglobulin-like receptors (LIR) (United States Patent 6,384,203)
Use of anti-CD45 leukocyte antigen antibodies for immunomodulation (United States Patent 6,379,668)
Benzyl compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,362,341)
Hematological reference control composition containing leukocyte analogs, methods of making, and uses thereof (United States Patent 6,362,003)
On line blood processing system for obtaining for storage a blood suspension having a reduced residual leukocyte population (United States Patent 6,361,692)
Leukocyte-removing filter material (United States Patent 6,352,642)
Compositions of highly-purified natural mixtures of type I interferon derived from leukocytes and methods (United States Patent 6,350,589)
Composition and device for detecting leukocytes in urine (United States Patent 6,348,324)
Leukocyte reduction filtration media (United States Patent 6,337,026)
4-amino-phenylalanine type compounds which inhibit leukocyte adhesion mediated by VLA-4 (United States Patent 6,291,453)
Method of identifying individuals suffering from a cellular abnormality some of whose abnormal cells present complexes of human leukocyte antigen/tyrosinase derived peptides, and methods for treating said individuals (United States Patent 6,284,476)
Leukocyte eliminating filter and method for manufacturing the same (United States Patent 6,251,276)
Method and apparatus for differentiating and enumerating leukocytes (United States Patent 6,232,125)
Viral vectors to inhibit leukocyte infiltration or cartilage degradation of joints (United States Patent 6,228,356)
Composition and method for differentiation of basophil and eosinophil subpopulations of leukocytes in blood (United States Patent 6,210,969)
Identification of canine leukocyte adhesion deficiency in dogs (United States Patent 6,210,897)
Efficient process for the preparation of [S-(R,S)]-N-[1,3-benzodioxol-5-yl)butyl]-3,3-diethyl-2[4-[4-methyl-1-piper azinyl)carbonyl]phenoxy]-4-oxo-1-azetidine carboxamide, a human leukocyte elastase inhibitor (United States Patent 6,194,569)
Human leukocyte 12-lipoxygenase and its role in the pathogenesis of disease states (United States Patent 6,191,169)
Diagnosis of disease state using MRNA profiles in peripheral leukocytes (United States Patent 6,190,857)
Monoclonal antibodies against leukocyte adhesion receptor .beta.-chain, methods of producing these antibodies and use therefor (United States Patent 6,187,308)
Leukocyte-specific protein and gene, and methods of use thereof (United States Patent 6,183,988)
Heterocyclic compounds which inhibit leukocyte adhesion mediated by .alpha..sub.4 integrins (United States Patent 7,135,477)
Modulators of leukocyte activation, compositions and methods of use (United States Patent 7,122,332)

Although his recognition as a registered patent agent permits him to represent others in all patent matters before the United States Patent and Trademark Office, Dr. Demchick limits his practice to patent matters involving inventions for which he is confident that his expertise will allow him to serve his client well. He will gladly discuss whether he is comfortable handling cases involving inventions in a particular field. He will err on the side of declining cases if he has uncertainty about his ability to do what is needed in the case. Dr. Demchick does not represent clients in court. However, he refers clients to a patent attorney who does represent others in court, if it appears likely that patent related representation in court is appropriate. Dr. Demchick prepares and files non-provisional (regular) patent applications and provisional patent applications. He prepares and files utility patent applications and design patent applications. He prepares and files U.S. patent applications and international patent applications under the Patent Cooperation Treaty (PCT). He prepares and files applications to enter the U.S. National Phase for inventions for which international patent applications (PCT) were already filed. One of the matters he discusses with each client or potential client is which type of application(s) best meets that client's needs. He usually does a patent search (patentability search) as part of the preparation of a patent application. He discusses the value of patent searching with each inventor before agreeing to prepare a patent application for that inventor.